Musa b. Talha said he had the letter of Mu'adh b. Jabal from the Prophet to the effect that he ordered him to collect sadaqa only on wheat, barley, raisins and dates.
It is in mursal form and is transmitted in Sharh as-sunna.
Mu'adh said that when the Prophet sent him to the Yemen he ordered him to take a male or female calf of a year old for every thirty cattle and a cow in its third year for every forty.
Abu Dawud, Tirmidhi, Nasa’i and Darimi transmitted it.
