Musnad Ahmad 782
It was narrated that Tariq bin Shihab said:
I saw `Ali (رضي الله عنه) saying on the minbar. By Allah, we have no book we read to you except the Book of Allah, may He be exalted, and this document - which was attached to his sword - that I took from the Messenger of Allah (ﷺ), in which are the rates of zakah. It was attached to a sword that had iron adornments, or he said, that had iron rings.
حَدَّثَنَا هَاشِمُ بْنُ الْقَاسِمِ، حَدَّثَنَا شَرِيكٌ، عَنْ مُخَارِقٍ، عَنْ طَارِقِ بْنِ شِهَابٍ، قَالَ شَهِدْتُ عَلِيًّا رَضِيَ اللَّهُ عَنْهُ وَهُوَ يَقُولُ عَلَى الْمِنْبَرِ وَاللَّهِ مَا عِنْدَنَا كِتَابٌ نَقْرَؤُهُ عَلَيْكُمْ إِلَّا كِتَابَ اللَّهِ تَعَالَى وَهَذِهِ الصَّحِيفَةَ مُعَلَّقَةً بِسَيْفِهِ أَخَذْتُهَا مِنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِيهَا فَرَائِضُ الصَّدَقَةِ مُعَلَّقَةً بِسَيْفٍ لَهُ حِلْيَتُهُ حَدِيدٌ أَوْ قَالَ بَكَرَاتُهُ حَدِيدٌ أَيْ حِلَقُهُ‏.‏