Musannaf Ibn Abi Shaybah 10202 — Zakah on cattle: what it is

Muhammad bin Yahya bin Hibban said that Nu'aym bin Salamah informed him. The seal of Umar bin Abd al-Aziz was in his (Nu'aym's) keeping. Umar bin Abd al-Aziz called for a document which people claimed was the very document that Muhammad (peace and blessings be upon him) had written to Sayyiduna Mu'adh (may Allah be pleased with him). Nu'aym said: That document was read before him and I too was present on that occasion. It was written in it: "On every thirty cows, one tabi', a jadh' or a jadh'ah; and on every forty cows, one musinnah." Nu'aym said: I asked: "A tabi' al-jadh'?" Umar said: "A tabi' jadh'."