Tariq bin Shihab (may Allah have mercy on him) says that I heard Sayyiduna Ali (may Allah be pleased with him) saying on the pulpit: By Allah! We have no book that we read except the Noble Qur'an, or this scroll which is hanging from the sword. I obtained it from the Prophet (peace and blessings be upon him), and it contains the details of the shares of Zakat. The mentioned scroll used to hang from the sword of Sayyiduna Ali (may Allah be pleased with him), whose rings were made of iron.