Alhassanain(p) Network for Heritage and Islamic Thought

Legal Comparability and Cultural Identity: The Case of Legal Reasoning in Jewish and Islamic Traditions

Joseph E. David*

Table of Contents

1. Introduction. 4

1.1 Fruits and Religions 4

1.2 Provoked Comparison. 4

1.3 Making Jewish and Islamic Laws Comparable 6

2. Legal Reasoning: Structure and Theology  8

2.1 The Qiyas (Legal Analogy) 9

2.2 Epistemology and Legal Theology. 9

2.3 Orientating the Sacred Place 10

3. Rabbinic Attitudes towards Legal Reasoning  12

3.1 Holistic Jurisprudence and the Intelligibility of the Divine Law. 13

3.2 Against the Dual-Stratum Paradigm. 14

4. Legal Reasoning and Judicial Error 16

4.1 The Talmudic Typology of Judicial Errors, Sherira b. Hanina and Moses Maimonides 17

5. Concluding Reflections: Comparability and Identity  20

Notes 23

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1. Introduction

1.1 Fruits and Religions

Comparative studies of cultures, religions or praxis involve much more than applying a method. They are not just about confronting similarities and underlining differences. Behind such projects is the belief that a comparative perspective would provide both a better understanding of the compared systems and contribute knowledge that would not otherwise be attained. Nevertheless, the nature of the ‘additional knowledge,’ and the extent to which such knowledge is a unique outcome of the comparative study, are still to be explained. Furthermore, comparative projects also run the risk of being held hostage to biased paradigms, simplistic preconceptions, preoccupations with self-understanding and even unconscious commitments to a political agenda. A comparativist should be alert to hidden traps along the way and anticipate stumbling across them throughout her study.

A comparativist should also be simultaneously mindful of both the inducements of the project and the comparability[1] of the subject matters. In the context of comparing legal systems, those problems commence with two inquiries: (1) what curiosities and premises are motivating the comparison; and (2) what type of justifications, preconditions, constraints and limitations apply to such a comparison?A fortiori , if we accept the conventional jurisprudential assumption that the law, as a unique social-political phenomenon, has universal characteristics, then comparing legal systems, either diachronically or synchronically, is like comparing fruits.[2] The following discussion will address these questions by referring to the foundations of legal reasoning in both Jewish and Islamic jurisprudential thought. Following our study, we will offer some general reflections on the relatedness of Jewish and Islamic legal systems and their comparability.

1.2 Provoked Comparison

The comparison of Jewish and Islamic legal traditions has attracted scholars since the very early stages of Oriental studies in Western academies.[3] The Jewish-Islamic comparative perspective has also played a major role in various areas of Islamic studies and consequently shaped the leading scholarly paradigms. Nevertheless, only recently have scholars began to demonstrate sensitivity to the methodologies of these comparative studies.

The intellectual motives that have typically guided such comparative projects can be classified into three distinct categories. The first seeks to discover or locate influences; the order of influence, or other consequential exchanges such as the borrowings or adoptions of ideas between the two legal systems. Underlying the exploration of influences, however, are often aspirations to claim originality or to demonstrate how later ideas and praxis were derived from earlier sources. Such a comparative approach, even when undertakenbona fide , is not free of suspicion concerning its objectivity, viz, that it serves agendas that celebrate the originality and thus the superiority of the source over its descendants. In the case of Islamic studies, such a conception has often been adopted by those who view of the formative period of Islam as best understood by reference to Jewish, Christian and other environmental influences upon the Prophet Muhammad and his believers.[4] Such a conception is explicitly evident in the work that is considered the cornerstone of modern Oriental scholarship – A. Geiger’s (1810-1874)Was hat Mohammed aus dem Judenthume aufgenommen? This pioneering study, and many others like it, illustrates the prevalence of the vocabulary of ‘influence’ and ‘borrowing’ in supporting political and ideological efforts to reinvent the image of Jews and their civic conditions in modern Europe.[5] However, tracing the influences of the Jewish legal tradition on the Islamic one is not always asymmetrical. Alongside the efforts to situate Islam as a daughter-religion[6] against the Judeo-Christian backdrop, many studies concerning early medieval Rabbinic literature are motivated by a desire to demonstrate the considerable impact of Islamic law and legal thinking on Jewish legal literature, either Rabbinic or Karaite, of that period.[7] Generally speaking, the ideological motives for exploring influences and for seeking original sources were obviously related to the 19th century philological zeitgeist, the diachronic focus on historical developments and the endeavor to reconstruct the ‘original’, either the text or the author’s intention.[8]

A second motive is related to the nostalgic image of the scholastic environment in which Jewish thinkers and jurists jointly collaborated with their Islamic counterparts. Inspired by the historical image of the ‘Golden Age’ in which medieval Jewish learning centers in Iraq, Iran, the Maghreb and Andalusia were highly respected and coexisted peacefully under Islamic regimes, the aim of such a perspective is to reaffirm such dignified historical realities and perhaps even encourage similar visions in the present time.[9] Pastoral accounts of this type are very common in descriptions of medieval philosophy and mysticism, in which those subjects are portrayed as identity-blinded disciplines with the capacity to transcend divisive elements and religious borders. Affected by the spirit of the European Enlightenment, these disciplines were taken as a common foundation for universal reflections of a higher order and as a means to bridge the particularities of each religion. The extent to which such collaborations truly took place, or rather have been projected by modern scholars, should be examined in relation to each case independently. Against this background, the discussion below indicates that collaborative milieus shared legal, as well as theologico-legal perceptions. As we shall see, alongside the kindred theological principles underlying both legal systems, Jewish and Islamic jurists often felt they were participating in the very same projects. Hence, the distinctive positive contents of the two legal systems did not stop them from developing unified conceptual language and similar self-understanding. However, this perspective implicitly presumes a political vision as well. By highlighting images of collaboration and shared knowledge, the relatedness and common ground between both communities are stressed by ignoring the hierarchical relations as an essential component.[10]

Contrary to the previous motives, the third aim is to increase sensitivity towards essential differences within the compared legal systems and to underline the peculiarities of each. As such, comparison serves as a methodological tool by which particular features of each legal system are revealed. The comparative perspective makes it easier to observe latent and marginal features. A better understanding of both legal systems is achievable through a conceptual analysis of their notions, institutions and practical solutions. While the previous motives focused on the common ground between the two systems, the current comparative perspective, sometimes described as ‘new comparativism’,[11] seeks to develop self-understanding and to increase awareness of their essential variations. Such a perspective is indifferent as to whether an actual encounter between the traditions occurred. The comparative method is likely to be an imaginary set-up by which a certain legal system is more clearly reflected. In that respect a comparative perspective might be evaluated as a kind of thought experiment.

In fact, referring to actual encounters and common ground is entirely justified when addressing medieval Jewish and Islamic jurisprudential thought. Moreover, since actual interactions between Jews and Muslims took place on various stages, both deliberately and unconsciously, it would be wrong to avoid descriptions of influence or borrowing. Even a strong commitment to a critical postcolonial approach should nota priori avoid the vocabulary of influence. Such a restriction would artificially limit the investigational scope and thus be unjustified.

Against the above approaches, our following analysis will refer to jurisprudential consciousness as the object of our comparative study and as its source of justification (henceforth: comparative jurisprudence). We will concentrate on the conscious ideas, principles, concepts, beliefs and reasoning that underlie the legal institutions and doctrines. More precisely, we will examine the jurists’ self-understanding and the ways it reflects the relationship between Jewish and Islamic legal systems.[12]

The comparative jurisprudence approach not only favors jurisprudence as an appropriate lens for comparing legal systems, but also defines jurisprudence with a focus on consciousness – i.e. on the agent’s internal point of view. In contrast with the common conceptions of law, by either naturalists or positivists, it proposes to consider the perceptions of the law as relevant factors. In terms of historical observations of Jewish and Islamic legal traditions, the organizing questions would go beyond influences or borrowing to inquire how the jurists, judges or law-makers understood their engagements with the corresponding legal system.[13]

1.3 Making Jewish and Islamic Laws Comparable

Many of the comparative studies of Jewish-Islamic legal traditions are largely led by curiosity about influences and borrowings, and are not necessarily troubled by wider questions of comparability. In fact, the comparison of Jewish and Islamic legal systems can be justified on various grounds – historical and jurisprudential on the one hand, and perceptional on the other hand.

Historically, the existence of medieval Jewry under Islamic political and cultural domination provided cultural and intellectual encounters and interactions of scholars of both milieus.[14] The sharing of a common language, cultural codes and habits naturally served as a vehicle for exchanges of legal doctrines, institutions and perceptions. In that respect, a comparison of both legal systems is anticipated on factual grounds and part of the effort to explore past realities. From a jurisprudential point of view, the comparability of Jewish and Islamic legal systems is justifiable because of similar theological and structural apparatuses. In a way, both legal systems are committed to ‘religious legalism.’ In contrast with antinomian religiosity, often ascribed to the theology of St. Paul, both Jewish and Islamic mainstreams are law-centered religions, i.e. religions that acknowledge the subordination to the law as the most meaningful expressions of religious life.[15] Hence in both theology was essentially intertwined in legal theory.[16] Consequently, the implementation of the divine/earthly distinction within a legal system, according to which the law as the articulation of divine imperatives is also subject to human manipulation, invited a dualist conceptualization of the law. Therefore, both systems are structured in various dualistic fashions, either as a dual stratum (vertical dualism) or as a bipolar scheme (horizontal dualism), which provides coherent meaning to the seemingly oxymoronic idea of ‘divine law subject to human reasoning.’

Against the historical and jurisprudential understandings for comparing Jewish and Islamic laws, their comparability could also be reasoned in reference to the self-understanding of the jurists who acted within these legal systems. Indeed, throughout the ninth to the twelfth centuries, Jewish jurists were largely inspired by Islamic jurists, their literature, doctrines and institutions. The extent to which this inspiration was acknowledged or covered by their rhetoric is an interesting question that has much to do with the aim of presenting the Jewish legal legacy as ancient and purely transmitted. But even when the analogies to Islamic law are not emphasized, the Jewish references to a similar legal vocabulary indicate the acknowledgment in a comparative perspective. Therefore, the comparability of Jewish and Islamic law systems also rests on the comparative consciousness of the Jewish jurists when they reflected on their own system.

2. Legal Reasoning: Structure and Theology

It follows that Islamic Law everywhere strives to go back to direct the pronouncements of the founder, thus veritably developing a strictly historical method, while both Talmudic and Canon Law seek to make their points by means, not of historical fact-finding, but of logical deduction (logischer Ableitung). For deduction is subconsciously determined by the goal of the deduction, that is to say the present, and therefore it gives contemporary power over the past. Investigation, on the other hand, makes the present dependent on the past. Even in this seemingly pure world of law, then, one can still recognize the difference between the commandment to love and the obedience to law.

Franz Rosenzweig[17]

Interestingly, Rosenzweig observes legal reasoning as a typological differentiator between the three monotheistic legal systems – Islamic, Talmudic[18] and Canon law. He portrays two types of confronting legal theories: on the one hand, Islamic law is based onnostalgic jurisprudence , is highly committed to historical facts,[19] and accordingly celebrates obedience to law as the supreme value. On the other hand, Talmudic and Canon law, as future-oriented systems, are based ondeductive reasoning , much less constrained by the law and hence emphasize the virtue of love as the ultimate divine commandment. Rozenzweig’s observations are, however, peculiar and incompatible with common scholarly accounts on both Jewish and Islamic legal systems. First, against the view of mainstream Rabbinic theology as legalist by nature, he describes Jewish law in Christian and antinomian terms as an expression of the ultimate commandment to love. Second, and perhaps even more irreconcilable with our usual understanding, is his presentation of Islamic law in opposition to the use of deductive reasoning. While one can deny viewing Jewish law as based on a future-oriented jurisprudence, it is much more difficult to agree with Rosenzweig’s observation that Islamic law is not deductive. In fact, his position is a total denial of the fourth root Sunni jurisprudence, which is the jurist’s independent reasoning –qiyas orijtihād . Being freed from Judeo-Christian idealism,[20] we will focus on the significance of legal reasoning in medieval Rabbinic jurisprudence through a comparison to its role in Islamic jurisprudence.

Generally, Rabbinic jurisprudence in the Middle Ages may be examined in reference to three axes. The first one pertains to the relationship between Talmudic and post-Talmudic reflections on legal concepts. One focus of post-Talmudic efforts was to reconcile and harmonize Talmudic and post-Talmudic rulings. The second axis illustrates the complex relationships between a rationalism that celebrates human reasoning as an essential component of any legal activity, and traditionalism, which insists on taking the law as an outcome of divine revelation and therefore opposes reliance on human reasoning in legal matters. The third axis is the Rabbinate-Karaite[21] polemic, which reached its climax in the first half of the tenth century.

There is some evidence to support the view that legal reasoning was indeed a controversial topic in the Rabbinate-Karaite polemics,[22] though our analysis suggests a revision of this view and hence its moderation. On the other hand, legal reasoning was at the heart of the rationalist-traditionalist tension, to which Jewish legal historians have paid very little attention.[23]

2.1 The Qiyas (Legal Analogy)

The Arabic termqiyas (قياس) in its legal sense can refer, in various contexts, to any of the three legal concepts – judicial analogy, general deduction or syllogism.[24] Legalqiyas is at times considered the archetype of all forms of legal argumentation.[25] In particular, it indicates the various types of argumentations that legal scholars use in their independent reasoning –ijtihād (اجتهاد‎),[26] and for this reason it occupied a central place in theuṣūl al-fiqh literature.[27] Following Shafi’ī’s[28] discussion,qiyas revolve around the fundamental typology of (1) cause-basedqiyas and (2) resemblance-basedqiyas . Cause-basedqiyas is a means for extending an existing norm to cases which where is no explicit instruction or precedent in the known law. Accordingly, the expansion of the law is based on an existing causal component (cause, reason or meaning) shared by both the existing law and the new case.[29] Resemblance-based qiyas, on the other hand, is based on the isomorphic resemblance of the two cases.[30] These two types ofqiyas thus illustrate distinct associations between an existing law and a new case: while in cause-basedqiyas a shared element associates the two cases, in resemblance-basedqiyas the isomorphic likeness allows their association. That is, cause-basedqiyas connects the two cases by means of a third factor - the underlying cause, while resemblance-basedqiyas connects the two to one another intrinsically.

2.2 Epistemology and Legal Theology

There are two people in the same state and under the same king, living two lives and under two jurisdictions, clergy and laity, spiritual and carnal, sacerdotium and regnum.

Stephen of Tournai [31]

The identification of the law with the ‘Word of God’ is indeed a central principle for both Judaism and Islam. Consequently, a great degree of correlation between legal propositions and theological principles is anticipated. From the very outset, Medieval Jewish and Islamic laws emphasized the transparent relationship between the positive contents of the law and the perception of God as the ultimate legislator. Thus, in many respects, knowing the law and applying it correctly are equivalent to the reception of divine revelation. As such, legal epistemology is reliant upon its theological assumptions, so that the epistemological prepositions are mixed together with the theological claims about the nature of God and His relation to the believers. This aspect singles out the uniqueness of these legal systems in that the source of legitimacy in Jewish and Islamic laws is epistemological rather than institutional. Due to the association of legal theology and epistemology, many of the debates about legal reasoning are associated with theological discussions about the nature of human reasoning from a theological point of view: is legal reasoning essentially no more than an interpreting faculty, or is it, alternatively, an autonomous source of knowledge?[32] To illustrate the dependency of epistemology on theology and its implications on the theoretical structure of the law, we shall refer to a metaphor that is commonly mentioned in Islamic jurisprudential discussion to support legal reasoning.

2.3 Orientating the Sacred Place

The example commonly brought to justify legal reasoning and the multiplicity of opinions among jurists is the dilemma of finding the direction of prayer – theqiblah – for believers who cannot visually locate Mecca.[33] While the obligation of facing Mecca applies to every Muslim believer with no temporal or spatial limitations, performing this duty might involve certain practical difficulties when Mecca is beyond the believer’s sight. In that case, the worshipper must make a special effort and use his own judgmental faculties in order to determine the correct direction.[34] The traveler who seeks the direction of Mecca needs available signs by which he can find the proper direction.[35] In that respect, these circumstances exemplify both the epistemological problem and its solution. Determining the correct direction illustrates the ascertainment of the right answer, and the traveler’s predicament is analogous to the confusions that may beset the jurist who seeks the right answer for the case that confronts her. This metaphor concretizes the idea that, since the objective law is not always known to the believers, the place at which certainty ends is the point of departure for the jurist’s independent reasoning. Legal reasoning in this sense is not the jurist’s privilege, but rather a mandatory religious duty under conditions of insufficient knowledge. From this metaphor we can derive the following presumptive approaches, which are not entirely epistemological principles or theological postulations; they present a combined matrix in which the epistemological dimension is an inherent component of legal theology.

1. Metaphysical realism: The first approach relates to the metaphysical dimension of legal norms. It assumes that legal answers are characterized by ‘strong objectivity.’[36] In other words, it asserts that the metaphysical existence of a legal norm is independent of human ability to conceive it. According to this principle, every legal question has a definite answer; there is a relevant answer for every possible normative state of affairs. A specific case for which there is seemingly no existing law is nothing but a cognitive blindness and not a limitation of the law itself.[37] The incorporation of realist metaphysics within the context of revealed law implies that the divine law reflects God’s concern with every possible set of earthly circumstances. For that reason, the religious value of the law is not exhausted by the subordination to the word of God, but primarily in the fact that through the law God reveals his concrete intentions about the world. As such, legal knowledge that uncovers God’s will is of no lesser value than theological knowledge that reveals God’s nature and his guiding principles.[38]

2. Incomplete revelation and limited legal knowledge: Despite the above, the law known through revelation does not include the rulings for all possible circumstances. Hence, this entails the distinction between the law known by revelation, i.e. the law inscribed in theQur’ān or revealed in theSunna (henceforth: therevealed law ), and the law derived from it (henceforth: thederivative law ). This distinction acknowledges the structured limitation of legal knowledge. Therefore, the part of the law that is not known by revelation is concealed and hidden from human eyes, just as the holy mosque and the city of Mecca are indiscernible to the remote traveler. Legal knowledge therefore is first obtained through revelation and thence derived by legal reasoning (ijtihād ), interpretation (tawil ), and analogy (qiyas ). Similarly, this premise makes it clear that legal reasoning expresses the religious virtue of human efforts in discovering the implicit word of God.

3. Gnostic gist: [39] The third approach is related to the previous two. It asserts that notwithstanding the incompleteness of revelation and the restrictions of legal knowledge, God in His goodness would not leave his believers in doubt and confusion. To this end, He conceals within the revealed law hints and traces without which the believers cannot discover the correct legal answers. This theological stance reemphasizes the juxtaposition of epistemology and theology.[40] It concretizes the idea that God’s grace is translated to epistemological and methodological aid.[41] Thus, the theoretical justification of legal reasoning is in fact a combination of skeptical epistemology and gnostic theology. Legal reasoning is therefore no more than a structured component of the Divine law that is designed to include human reasoning as an interpretative tool.

These three approaches illustrate that religious legalism is inherently linked to a dual-stratum structure or the division of the entire body of law into two categories: (1) the law known through explicit revelation; and (2) the implicit, derivative law known through the jurists’ intellectual efforts that captures the dialectic notion of divine law in human hands. Legal norms of the first category are transparent and knowable to the entire community of believers, certain, and therefore indisputable. Conversely, propositions of the second category are subject to a wide range of interpretations. Therefore they are not only disputable but epistemologically at best only plausible. The dual-stratum structure also projects far-reaching sociological implications. It decisively supports the privileged status of the legal experts. In terms of sociological theory, such a structure provides the preconditions for the necessity of clerical expertise. Put differently, this structure represents the endeavor to reserve legal exegesis for an exclusive group of experts.

3. Rabbinic Attitudes towards Legal Reasoning

Generally, Jewish medieval jurists did embrace legal reasoning as a legitimate means in applying religious legal norms. In what follows we will first describe rabbinic criticism of legal reasoning and then the rabbinic embracement of legal reasoning. Among Jewish medieval thinkers, only two are known to us as opponents of the use of legal reasoning – the head of the Suraian academy in the first half of the ninth century, Sa’adya b. Yosef Gaon (882-942 CE) and the Spanish physician, poet and philosopher Yehudah Halevi (1075-1141 CE). We will portray Sa’adya’s arguments against the use of theqiyas .[42] Traditionally, scholars who have dealt with his objection to theqiyas have tended to view his stance as deriving from the heated debates he had with the Karaite and from his endeavors to defend traditionalism.[43] Sa’adya condemns the Karaite enthusiasm with theqiyas as resulting from secondary rather than from substantive considerations. [44] Accordingly, he suggests that the Karaite’s stance is caused by their mistaken response to the incompleteness of the revealed law and consequently the bound legal knowledge – “The reason that stimulated the opponents [=Karaites] to believe in intellectual capacity (al-ra’y) and analogy (qiyas), is that they found things which required knowledge whether permitted or forbidden, and which are not written in the Torah, and likewise [matters which their] quantities and qualities are inexplicit.”[45] Subsequently Sa’adya also notes the gnostic assumption: “Nevertheless, they know that it is impossible to say of the Creator, may He be exalted and praised, that he left the people perplexed. On the contrary, there is no doubt that He placed before them that which could lead them to their quest.”[46] Yet it is still doubtful whether these quotations reflect Sa’adya’s principled objection toqiyas . Unlike the above polemic context, in a treatise dedicated to jurisprudential analysis Sa’adya expands the discussion of theqiyas , from which discussion emerges a deeper and richer picture of his objections. According to our proposed reading, his objection to application of judicial analogy derives from his rationalistic theology, and not from the debate with the Karaites.

As a rationalist, Sa’adya is also concerned with the limitations of rational methods in order to fully respect the independency of reasoning. Paradoxically then his objection to theqiyas is the result of his rationalistic insistence. The gist of this paradox is the acknowledgment of reason as a valid source of religious knowledge on the one hand, while acknowledging the fundamental identification of the law with the revealed Word of God on the other. This dialectic invites the heuristic distinction between legal norms which are acquired by reason – rational laws (Ar. ‘aqliyyāt , Heb.sikhliyot ) – and those given through revelation – revelational laws (Ar.sam’iyyāt , Heb.shimi’yot ).[47] Sa’adya limitsqiyas only to rational laws and denies its relevance for revelational laws. Hence paradoxically his keen insistence on the validity of human reasoning as source of religious knowledge ultimately reduces the applicability of rational faculties in the framework of religious law. This being so, Sa’adya’s legal theory presents a new perspective on the conceptual meaning of judicial analogy.

3.1 Holistic Jurisprudence and the Intelligibility of the Divine Law

Sa’adya’s legal theory is primarily an organic one. In this world view, in which “no things have existence except by way of combination,” the internal relations among the components of the divine law are not contingent, and in practice they determine the possible manipulations within the law. The legal theory that Sa’adya presents in the beginning of Kitāb Tahsil Ashar’i’ Asama’iyah[48] (henceforth: Kitab Tahsil ) Sa’adya describes the internal relations within the law by ontological categories - substance and accident - by which he characterizes the relationship between the general rules and particular cases.[49]

From viewing the relationship between the whole and its particulars as essential, Sa’adya derives the principle of ‘unity of knowledge’ or, in his words, “the source of wisdom is one”[50] or “the root of knowledge is one”.[51] The significance of this principle may be seen on two levels. First, knowing the substance as a whole entails knowledge of the substance’s appearances or accidents. Second, the same essential relations between the whole and its particulars also exist between the subject of knowledge and the modes of its cognition: “And that which we said regarding substance and accident also applies to the things that are apprehended by the senses. Each one of them is apprehended by the same sense by which its totality is apprehended. There is no sound which is not apprehended by the sense of hearing, nor any color that is not apprehended through the sense of sight.”[52] This being so, the relation between substance and accidents is the relation between the whole and its parts, and therefore poses a three-fold correlation between thesubjects of knowledge, thestatus of knowledge and themodes of cognition.[53] This correlation between the metaphysical core of the law and its epistemological modes leads Sa’adya to examine the justification for judicial analogy against the background of the distinction between the rational and the revelational laws.

As mentioned above, Sa’adya establishes his legal theory on the distinction between rational and revelational laws.[54] The basis of this distinction lies in the idea that the intelligibility of the rational laws is absolutely independent, whereas knowledge of the revelational laws depends on revelation. This distinction apparently touches the very heart of the Sa’adianic attitude towards legal reasoning. Thus, the negation of theqiyas is an outcome of exhausting the epistemological implications of the distinction between rational and revealed laws. In that respect, Sa’adya’s objection to the use ofqiyas with regard to revelational laws strengthens the metaphysical weight of the rational/revelational distinction. Sa’adya’s reflections upon the rational/revelational distinction suggest that its source lies in the fact that different kinds of legal knowledge apply to different kinds of laws. That is to say, the distinction is not the result of the limitations of human ability to comprehend the laws, but rather of a substantive distinctiveness of the rational laws from those that are revealed. Thus when defining the jurists’ rational activities, such as exegesis (tawil ), analogy (qiyas ), and personal preferences (istihsan ), attention should be paid to the metaphysical set-up of rational and revelational laws and its application should therefore be limited to the rational laws. Sa’adya disapprovingly portrays the application of revelational laws to new cases byijtihād orqiyas as separating the particulars from their holistic structure. Applying exegesis to the revelational laws is represented as an arbitrary method that substitutes the original study. For this reason, the multiplicity of opinions and schools do not enjoy the same legitimacy that is granted them in the dual-stratum model.

3.2 Against the Dual-Stratum Paradigm

From Sa’adya’s statements inKitab Tahsil, we know that this treatise originally contained ten arguments against the use ofqiyas .[55] Unfortunately, the extant manuscript contains only three of those ten arguments,[56] and they reflect the rhetorical transition from negatingqiyas on theoretical grounds to indicating the weaknesses of the theories that justify it. In fact, Sa’adya’s objection to legal reasoning can be understood as a criticism of the distinction between revealed and derivative laws (the dual-stratum paradigm), which should be substituted by a generic, bipolar distinction between rational and revelational laws. Below, we shall briefly summarize Sa’sdya’s arguments against the dual-stratum paradigm.

Normative Differentiation: Sa’adya argues that from the revealed/derivative distinction one needs to derive implications regarding the decisiveness of the different laws. Accordingly, the revealed/derivative distinction should entail different levels of severity vis-à-vis cases of violating the laws. That is, since derivative laws attained by analogies are no more than human attempts to discover the correct answer, it would be inappropriate to treat the violations of laws equivalently. It makes no sense to punish a person who violates a derivative-law prohibition as harshly as a person who violates a revealed-law prohibition. In particular, Sa’adya claims that, in order to be consistent with the dual-stratum paradigm, it is not justified to impose severe penalties, such as capital punishment, on violations of derivative laws, the validity of which are only probable.

Justification of Controversy: A further weakness of the dual-stratum paradigm is what might be referred to as ‘the ease of justification of controversy.’ Returning to the metaphor of seeking the right direction of prayer, multiplicity of opinions is expected and hence justified.[57] However, according to Sa’adya, ana priori justification of controversies with regard to derivative law confuses between anante factum justification and apost factum acceptance of the multiplicity of opinions. Since the derivative law is neither more nor lessthan an attempt to find the right answer, one must tolerate the differences of opinion as a necessary evil, but not as something justifiedab initio.

Master–Disciple Relations: Another argument against the dual-stratum paradigm pertains to the social structure, which is liable to be upset in its wake. Justifying judicial analogy in practice implies acceptance of the personal legal reasoning of each legal scholar in its own right.[58] Consequently, the hierarchical status of the master in relation to the disciple is likely to be upset. Sa’adya refers in that respect to the botanical metaphor of roots and branches in order to reflect the didactic relationship between mentor and student, thereby pointing out that a legal theory that justifies legal reasoning unravels the established relationships between mentor and disciple.

The analysis of Sa’adya is a response to the classical Sunni theory of legal reasoning and demonstrates the extent to which medieval Jewish jurisprudential thought naturally took part in the legal discourse of that time. His criticism of the dual-stratum paradigm is not based on Biblical verses or principles peculiar to Jewish thought, but rather on general philosophical arguments that could equally be made by an Islamic jurist. Indeed, jurisprudence for Sa’adya is a formal discipline that transcends the particular content of each religion, and therefore allows a shared terminology and conceptual vocabulary. In the discussion below, we will focus on modes of borrowing by which Jewish jurists favored Islamic jurisprudential concepts above traditional categories of Jewish law.