Issue 662...
Issue 662: If a quantity of wheat, barley, dates and raisins are consumed before paying the Zakah or giving it to another individual, it is obligatory to pay (that quantity's) Zakah. Issue 663: If wet dates and grapes are consumed before becoming dry or sold, the Zakah is obligatory (in dates and raisins) dried quantity is in the measure of a Nisaab. Issue 664: There is no Zakah in crops upon which Zakah had already been paid, although it might remain for numerous years.
Issue 665: The amount of the obligatory Zakah withdrawn from wheat, barley, dates, grapes (and raisins), when (these crops) are watered by rain water or irrigation or a river or dammed water or the moisture of the earth, is one tenth. When (the crops) are watered by deep wells or semi-deep wells or semi-level or by means of buckets or by hand or by a water wheel or by drawing water from rivers by a pump, one twentieth (is paid).
Issue 666: If agriculture is irrigated by both methods, if one of those methods is measured less, such that it is not customary (For example, had it mostly been watered with rainwater and in a very small amount with well water). The payment of its Zakah is according to its customary watering method.
However, if it is watered by each of the two methods in a customary amount, for example, a third or half of the time with rain water and the remaining time watered with well water, it is necessary to give the Zakah of that in halves, meaning that the Zakah of half of it is one tenth and the other half is one twentieth. Issue 667: According to obligatory precaution, the expenses for agriculture are not deducted from the yield.
Likewise it is in relation to the cost of the seeds which are used for cultivation. The Zakah is paid upon the entire yield of the land. The Nisaab of gold and silver Issue 668: Gold has two Nisaab: The first Nisaab is twenty Mithqaal Shar'i which equals fifteen Customary Mithqaal (Mithqaal Ma'mooli). Whenever gold reaches one of these quantities and other conditions are present, it is obligatory to give one fortieth of that (two and a half per-cent) with the designation of Zakah.
If this amount is not reached, there is no Zakah. The Second Nisaab is four Legal Mithqaal (Mithqaal Shar'i) which becomes three Customary Mithqaal, meaning that if three Customary Mithqaal are added to fifteen Customary Mithqaal, Zakah is required to be given on the total eighteen Mithqaal at the rate of two and a half percent.