"I heard Abu Juhaifah say: 'We asked 'Ali: "Do you have anything from the Messenger of Allah apart from the Qur'an?" He said: "No, by the One who splits the seeds and creates the soul, unless Allah gives a slave understanding of His Book, or except this sheet." I said: "What is in the sheet?" He said: "In it are (the regulations concerning) blood money and the freeing of captives and (the rule) that no Muslim should be killed for killing a disbeliever." (Using translation from Nasāʾī 4744)
سَمِعْتُ أَبَا جُحَيْفَةَ يَقُولُ سَأَلْنَا عَلِيًّا هَلْ عِنْدَكُمْ مِنْ رَسُولِ اللهِ شَيْءٌ سِوَى الْقُرْآنِ؟ فَقَالَ لَا وَالَّذِي فَلَقَ الْحَبَّةَ وَبَرَأَ النَّسَمَةَ إِلَّا أَنْ يُعْطِيَ اللهُ عَبْدًا فَهْمًا فِي كِتَابِهِ أَوْ مَا فِي الصَّحِيفَةِ قُلْنَا وَمَا فِي الصَّحِيفَةِ؟ قَالَ «فِيهَا الْعَقْلُ وَفِكَاكُ الْأَسِيرِ وَأَنْ لَا يُقْتَلَ مُسْلِمٌ بِكَافِرٍ»