The time for udhiyah (sacrifice)

It is from after the Eid prayer on the Day of Sacrifice until the sun sets on the last of the days of al-tashreeq, which is the thirteenth of Dhu’l-Hijjah. So there are four days of sacrifice: the day of Eid after the prayer, and three days after that. Whoever slaughters his sacrifice before the Eid prayer is over, or after the sun sets on the thirteenth, his sacrifice is not valid … but if he has an excuse for delaying it until after the days of al-tashreeq, such as if the animal ran away with no negligence on his part, and he did not find it until after the time was over, or if he delegated someone to do it on his behalf and his deputy forgot until the time was over, then there is nothing wrong with offering the sacrifice after the time has ended, because there is an excuse, by analogy with the fact that one who sleeps and misses a prayer or forgets it should offer the prayer as soon as he wakes up or remembers it. 

It is permissible to offer the sacrifice during that time by night or by day,

For how many people is the udhiyah sufficient?

One sheep is sufficient as udhiyah for one man and his family and whoever he wants among the Muslims, because of the hadeeth of ‘Aa’ishah (may Allaah be pleased with her) who said that the Prophet (peace and blessings of Allaah be upon him) ordered that a ram with black legs, black belly and black (circles) round the eyes should be brought to him, so that he could sacrifice it. He said to ‘Aa’ishah: “Give me the knife,” and she did that. He took it, then he took the ram, placed it on the ground and then slaughtered it (i.e., prepared to slaughter it), saying: “In the name of Allaah, O Allaah, accept (this sacrifice) on behalf of Muhammad and the family of Muhammad and the ummah of Muhammad.” Then he sacrificed it. 

Narrated by Muslim. 

If a man sacrifices a single sheep or goat on behalf of himself and his family, that will suffice for everyone he intended of his family, whether living or deceased. If he did not intend anything specific then it includes all those who are included in this word (family or household) either customarily or linguistically. Customarily it refers to all those whom he supports of wives, children and relatives; linguistically it includes all those who are related to him of his own children and the descendents of his father, grandfather and great-grandfather.

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