Sunan at-Tirmithiy كتاب الزكاة باب ما جاء فى الخرص
The Prophet, peace and blessings of God be upon him, used to delegate someone to assess [the future yield of] people's harvests of grapes and dates. Click on ḥadīth to read more
And with the same chain of transmission, [it has been related] that the Prophet, peace and blessings of God be upon him, said regarding the alms (1) due on grapevines, "They are to be assessed just as palm trees are assessed; and their alms given out in raisins, just as the alms [due] on palm trees are given out in dates." Footnotes: (1) (Zakāh): One of the five pillars of Islām: It is a calculated proportion of a Muslim's wealth that is paid annually for the benefit of the needy. It is due on certain assets, once their value reaches a certain threshold and the calculation varies according to the nature of the asset. Click on ḥadīth to read more