Musnad Ahmad 798
It was narrated that Tariq said:
`Ali (رضي الله عنه) addressed us and said: We have nothing of the Revelation - or he said: nothing written from the Messenger of Allah (ﷺ) - except what is in the Book of Allah and this document attached to my sword. - [The narrator said:] He was wearing a sword with an iron adornment. - In it are the rates of zakah.
حَدَّثَنَا عَبْد اللَّهِ، حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ الْوَرَكَانِيُّ، حَدَّثَنَا شَرِيكٌ، عَنْ مُخَارِقٍ، عَنْ طَارِقٍ، قَالَ خَطَبَنَا عَلِيٌّ رَضِيَ اللَّهُ عَنْهُ فَقَالَ مَا عِنْدَنَا شَيْءٌ مِنْ الْوَحْيِ أَوْ قَالَ كِتَابٌ مِنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِلَّا مَا فِي كِتَابِ اللَّهِ وَهَذِهِ الصَّحِيفَةِ الْمَقْرُونَةِ بِسَيْفِي وَعَلَيْهِ سَيْفٌ حِلْيَتُهُ حَدِيدٌ وَفِيهَا فَرَائِضُ الصَّدَقَاتِ‏.‏