What is the ruling regarding the offspring born to an animal designated as Hady (sacrificial offering)?
Chapter on Ransom (Fidyah) and Penalty for Hunting
Al-Mughni
Book of Hajj
Primary text
The offspring of a designated Hady animal is also treated as Hady if it is possible to lead it along with the mother. If leading is not possible, it must be carried upon the mother's back, and the offspring must be suckled from the mother's milk. If neither leading nor carrying is possible, the offspring is treated as the Hady animal itself would be treated if it perished (i.e., it is replaced or substituted according to the rules for damaged Hady). This ruling applies equally whether the animal was explicitly designated as Hady from the start or if it was designated later as a substitute for a Hady obligated upon the person's responsibility (dhimmah). The definitive opinion holds that the offspring follows the mother in obligation because it is the offspring of an obligatory Hady, thus rendering it obligatory, similar to an animal initially designated as Hady.
Supporting text
The view of Al-Qadi suggests that if the Hady was designated as a substitute for an existing obligation, its offspring might not follow it in obligation because the obligation in the responsibility (dhimmah) was singular, meaning only one animal is required, not two. Furthermore, it is narrated that a man approached Ali (may Allah be pleased with him) with a cow that had given birth. Ali instructed him not to drink the milk except what remained after the calf was fed, and stated that on the Day of Sacrifice (Eid al-Adha), both the mother and the calf should be sacrificed on behalf of seven shares (if the Hady was communal). If an explicitly designated animal substituting an obligation is slaughtered, its offspring must also be slaughtered as a consequence of following its mother.