It was narrated that Tariq - i.e., bin Shihab - said: I heard ` Ali (رضي الله عنه) say: We do not have any book that we read to you except what is in the Qur`an and what is in this document - a document that was in the sheath of a sword that he was wearing, which had an adornment of iron. - I took it from the Messenger of Allah (ﷺ) and in it are the rates of zakah.
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا عَبْد اللَّهِ، حَدَّثَنِي مُحَمَّدُ بْنُ أَبَانَ بْنِ عِمْرَانَ الْوَاسِطِيُّ، حَدَّثَنَا شَرِيكٌ، عَنْ مُخَارِقٍ، عَنْ طَارِقٍ يَعْنِي ابْنَ شِهَابٍ، قَالَ سَمِعْتُ عَلِيًّا، رَضِيَ اللَّهُ عَنْهُ يَقُولُ مَا عِنْدَنَا كِتَابٌ نَقْرَؤُهُ عَلَيْكُمْ إِلَّا مَا فِي الْقُرْآنِ وَمَا فِي هَذِهِ الصَّحِيفَةِ صَحِيفَةٌ كَانَتْ فِي قِرَابِ سَيْفٍ كَانَ عَلَيْهِ حِلْيَتُهُ حَدِيدٌ أَخَذْتُهَا مِنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِيهَا فَرَائِضُ الصَّدَقَةِ.
sunnah.com