It was narrated from ‘Aishah and Abu Hurairah that when the Messenger of Allah (ﷺ) wanted to offer a sacrifice, he brought two large, fat, horned, black-and-white, castrated rams. He slaughtered one on behalf of his nation, for whoever testified to Allah with monotheism and that he had conveyed (the Message), and he slaughtered the other on behalf of Muhammad and the family of Muhammad (ﷺ).
Explanation & Benefits
Maulana Ataullah Sajid
Benefits and Issues:
➊ The sacrificial animal should be of good quality.
➋ The animal should also be good in its outward appearance and form.
➌ The sacrifice of a castrated animal is valid; it is not considered a defect.
➍ The sacrifice of one animal is sufficient on behalf of all the members of a household.
➎ It is permissible to offer a sacrifice on behalf of someone else.
➏ Offering a sacrifice on behalf of a deceased person is not established by any authentic hadith. To infer this from the general practice of the Prophet (sallallahu alayhi wa sallam) is not correct, because according to some scholars, this was something specific to him (sallallahu alayhi wa sallam), in which it is not permissible for the ummah to follow him. See: (Irwa’ al-Ghalil: 4/354) Furthermore, even in the best generations (the eras of the Companions and the Followers), there is no evidence of offering a sacrifice on behalf of the deceased. It can only be considered permissible from one perspective: that giving charity on behalf of the deceased is allowed, i.e., as a means of conveying reward (isāl al-thawāb), and its denial is not possible. And Allah knows best.
Source: Commentary on Sunan Ibn Mājah by Mawlānā ‘Atā’ullāh Sājid, Page: 3122