1. Imam Ali (a)is also quoted as saying:
ما امرتكم بشي ء الا و قد سبقتكم بالعمل به , و لا نهيتكم عن شي ء الا و قد سبقتكم بالنهي عنه
I did not ask you to do anything unless I preceded you in doing it.And I did not ask you to refrain from anything except that I myself was the first to act thus so. (Nahj al-Balaghah , Sermon 157)
2. Bihar al-Anwar, vol. 44, p. 139. Thehadith is as follows:
وَ اعْمَلْ لِدُنْيَاكَ كَأَنَّكِ تَعِيْشُ أَبَدًا وَ اعْمَلْ لآِخِرَتِكَ كَأَنَّكَ تَمُوتُ غَدا
3. Sermon 195 (according to some editions, it may be Sermon 194)
4. For example, see Bihar al-Anwar, vol. 1, pp.177 & 180.
5. Al-Kafi , vol. 2, p. 235.
6. Al-Kafi , vol. 2, p. 667. The Arabic text is as follows:
مَنْ كَانَ يُؤْمِنُ بِاللهِ وَ الْيَوْمِ الْآخِرِ فَلْيُكْرِمْ ضَيْفَه