Musannaf Ibn Abi Shaybah

Hazrat Amr bin Shu'aib narrates from his father, from his grandfather, that the Messenger of Allah, peace and blessings be upon him, was asked about Fara'? So he, peace and blessings be upon him, said: "Fara' is a right. And that you leave it until the offspring becomes two or three years old, then you make it carry loads in the way of Allah, or you give it to a widow, this is better than that you slaughter it and mix its meat with its hair, and pour it into the pot, and make your she-camel mad." And the questioner asked you, peace and blessings be upon him, about 'Atirah? So he, peace and blessings be upon him, remained silent. A man asked Hazrat Umar about it, so he said: "We used to call it Rajabiyyah. Every family would slaughter a goat in the month of Rajab and eat it."