"I said to 'Ali: O Commander of the Believers! Do you have anything written that is not in Allah's Book?' He said: 'By the One Who splits the seed and creates the soul, I have not learned from it except what understanding of the Qur'an Allah gives to a man, and what is in this sheet of paper.' I said: 'What is in the paper?' He said: 'It is the 'Aql, the (ransom for) release of captives, and the judgement that no believer is killed for a disbeliever.'"  

قُلْتُ لِعَلِيٍّ يَا أَمِيرَ الْمُؤْمِنِينَ هَلْ عِنْدَكُمْ سَوْدَاءُ فِي بَيْضَاءَ لَيْسَ فِي كِتَابِ اللَّهِ قَالَ لاَ وَالَّذِي فَلَقَ الْحَبَّةَ وَبَرَأَ النَّسَمَةَ مَا عَلِمْتُهُ إِلاَّ فَهْمًا يُعْطِيهِ اللَّهُ رَجُلاً فِي الْقُرْآنِ وَمَا فِي الصَّحِيفَةِ قُلْتُ وَمَا فِي الصَّحِيفَةِ قَالَ فِيهَا الْعَقْلُ وَفِكَاكُ الأَسِيرِ وَأَنْ لاَ يُقْتَلَ مُؤْمِنٌ بِكَافِرٍ قَالَ وَفِي الْبَابِ عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو