According to ĥadīths, if one of the two contradictory proofsis endowed with a preferrer, it should definitely be taken; but what the preferrers are is a matter of dispute. Such preferrers differ in cases of contradiction (→al-ta‘āruđ) and interference (→al-tsazāĥum). The former include such affairs as being in accordance with celebrity, conforming to the holy Qur’ān, notbeing uttered due to dissimulation, positive qualities of transmitters, and the like. As for the latter, preferrers refer to the importance of one of the two proofs in the view of divine lawgiver: what is more important in His view is theone which should be given priority.