There is an inheritance that has not been divided yet, how should the Zakah due on the yield of the palm trees be calculated?
Zakah should be paid on the crops of the farm if they are weighed and saved such as grains including wheat, barley, corn, millet, rice, chickpea, lentil, and beans. Zakah is also due on fruits such as dates, raisins, almond, peanut, nuts, olive, and grapes because the fruits of these plants after drying can be measured and stored. However, there is no Zakah on vegetables and similar fruits. The textual evidence in support of the obligation of Zakah upon the production of cultivation is Allah's Statement:
O you who believe! Spend of the good things which you have (legally) earned, and of that which We have produced from the earth for you
The Prophet (peace be upon him) stated:
On that which is watered by rain or springs (i.e. By natural means), `Ushr (one-tenth) is due (as Zakah); and on that which is irrigated by carrying water on camels (i.e. By artificial means), half of the `Ushr (one-twentieth) is due (as Zakah on the yield of the land).
Al-Bukhari in his Sahih)It is not a condition for Zakah on cultivation that a year passes; rather, whenever the plants grow fully and their color turns red or yellow, and grain, grapes, and olives ripen, the Zakah is due. Allah (Glorified be He) states:
...pay the due thereof (its Zakât, according to Allâh’s Orders 1/10th or 1/20th) on the day of its harvest
The Nisab (the minimum amount on which Zakah is due) of Zakah is five Wasqs (1 Wasq = 60 Sa`s = 180 kg. Approx.), which are equal to 300 Sa`s (1 Sa` = 3 kg. Approx.) according to the Sa` of the Prophet (peace be upon him). Thus, when the harvest equals this amount, Zakah becomes due. (Part No. 8; Page No. 62) The due Zakah is 10% on land irrigated by rains, springs and the like, and only 5% on the land irrigated by machinery. The Prophet (peace be upon him) stated:
On that which is watered by rain or springs or draws water through its roots, `Ushr (one-tenth) is due (as Zakah); and on that which is irrigated by carrying water on camels, half of the `Ushr (one-twentieth) is due (as Zakah on the yield of the land).
Al-Bukhari) Since the production of the farm is owned jointly, the Zakah is due on all of you for the crops of the farm, provided that they are of the crops on which Zakah is due as mentioned above.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.