‘Abdallah b. ‘Amr reported God’s Messenger as saying, “I have been commanded to observe the day of sacrifice as a festival which God has appointed for this people.” A man asked, “Tell me, Messenger of God, if I can get only a female camel lent for milking, am I to sacrifice it?” He replied, “No, but take some of your hair and nails, clip your moustache and shave the hair over your pubes, and that will be a complete sacrifice for you in God’s sight.”
We were standing with God’s Messenger at ‘Arafa, and I heard him say, “O people, every family must offer annually a sacrifice and an ‘atira. Do you know what the ‘atira is? It is what you call the Rajab sacrifice.”
Tirmidhi, Abu Dawud, Nasa'i and Ibn Majah transmitted it. Tirmidhi said this is a gharib tradition with a weak isnad, and Abu Dawud said the ‘atira has been abrogated.
‘A’isha said there was an eclipse of the sun in the time of God’s Messenger, and he sent one to summon the people to congregational prayer. He then went forward and prayed two rak'as in which he bowed four times and prostrated himself four times. ‘A’isha said, “I never performed a bow or a prostration which was longer than it.”
Abu Huraira reported the Prophet as saying, “There is no fara’ and no ‘atira.” He said that the fara’ was the first animal born to them which they sacrificed to their idols, and the ‘atira was observed in Rajab.*
* These were practices of the idolatrous pre-Islamic Arabs. While the fara' sacrifice was abolished in Islam, it is said that the sacrifice of a sheep or goat in Rajab, known as the ‘atira, was continued in the early days of Islam and then abolished.