The time for slaughter begins after the ʿEid prayer and extends for two days thereafter¹; it is disliked to slaughter during the nights of those two days. Should that period lapse, one must still fulfil the required sacrifice.

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A hady or uḍḥiyah becomes formally designated by the owner’s words, “This is a hady,” or, “This is an uḍḥiyah,” not by intention alone. Once designated, it may neither be sold nor given away, unless it is exchanged for a better animal. Its wool and the like may be shorn if that benefits the animal, but the wool must be given in charity. The butcher is not to be paid his fee from the animal, nor may he be given its hide or anything else from it, though the owner himself may make use of the hide. If the animal subsequently becomes blemished, he must still slaughter it and it will suffice—unless the sacrifice had already been owed before the designation.

The uḍḥiyah is a confirmed sunnah, and slaughtering it is better than giving its price in charity. It is recommended to divide it into thirds: eating a third, gifting a third, and giving a third in charity. If he eats all of it save for one uqiyya, which he gives in charity, it is acceptable; otherwise he must compensate. It is unlawful for the person who intends to offer the sacrifice to take anything from his hair, nails, or skin during the first ten days of Dhu al-Hijjah.

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It is recommended to offer an ʿaqīqah for a boy with two sheep and for a girl with one. It should be slaughtered on the seventh day after birth; if missed, then on the fourteenth; and if missed again, on the twenty-first. The meat is to be separated joint by joint without breaking any bones. Its rulings mirror those of the uḍḥiyah—except that joint participation in one animal is not valid. The practices known as the farʿah and the ʿatīrah are not recommended.

¹ Counting the Day of ʿEid as the first, the time ends at sunset on the second day of Tashrīq.