The Book of Zakāh ⦗1⦘
Zakāh is obligatory upon every free Muslim⦗2⦘ who possesses a full nisāb with stable ownership once an entire lunar year has passed over it, except in crops subject to the tithe⦗3⦘.
The offspring of grazing livestock and the profit of trade are attached to their principal: if the principal itself constitutes a nisāb they are counted with it, and if not, they are used to complete it.
Zakāh must be paid retroactively on a debt owed to one, on usurped property, and the like, once it is recovered or the claim is cleared.
No zakāh is due on the wealth of anyone whose outstanding debt—even an expiation or the like—reduces his net assets below the nisāb.
The zakāh year for a minor’s property is the same as for an adult⦗4⦘. Should the nisāb drop below the threshold, or the owner sell it for goods of a different category without aiming to evade the obligation, the ḥawl is interrupted.
Continued possession of the wealth and the owner’s ability to pay are not prerequisites; zakāh remains a liability on the estate like any other debt.
Chapter: Zakāh on Grazing Livestock
Zakāh is due on animals kept for milk-production or breeding when they have pastured freely for most of the year⦗5⦘.