It is the duty of every free Muslim arrived at the age of maturity to offer a sacrifice, on the ‘Idu’l-Azha’, or ‘Festival of the Sacrifice’, provide… - Burhan al-Din al-Murghinani

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It is the duty of every free Muslim arrived at the age of maturity to offer a sacrifice, on the ‘Idu’l-Azha’, or ‘Festival of the Sacrifice’, provided he be then possessed of a Nisab (i.e., sufficient property), and be not a traveller. This is the opinion of Abu Hanifah, Muhammad, Zufar, and Hasan, and likewise of Abu Yusuf, according to one tradition. According to ash-Shafi’i, sacrifice is not an indispensable duty, but only laudable. At-Tahawi reports that, in the opinion of Abu Hanifah, it is indispensable, whilst the disciples hold it to be in a strong degree laudable. The offering of a sacrifice is incumbent on a man on account of himself, and on account of his infant child. This is the opinion of Abu Hanifah in one tradition. In another he has said that it is not incumbent on a man to offer a sacrifice for his child...