al-Zuhri ابن شهاب الزهري‎, محمد بن مسلم · The Book of al-Fara' and al-'Atirah

"While we were standing with the Messenger of Allah at 'Arafat, he said: 'O people, it is upon each family to offer a sacrifice (Udhiyah) and an 'Atirah each year." (One of the narrators) Muadh said: "Ibn 'Awn used to offer slaughter the 'Atirah, and I saw that with my own eyes during Rajab." (Daif)

"O Messenger of Allah! (What about) the Fara'?" He said: "It is a duty, but if you leave it (the animal) until it becomes half-grown and you load upon it (in Jihad) in the cause of Allah or give it to a widow, that is better than if you slaughter it (when it is just born) and its flesh is difficult to separate from its skin, then you turn your vessel upside down (because you will no longer be able…

some men of Quraish passed by the Messenger of Allah dragging a sheep the size of a donkey. He said to them: "Why don't you take its skin?" They said: "It is dead meat." The Messenger of Allah said: "Purify it with water and Qaraz."

"The letter of the Messenger of Allah was read to us when I was a young boy: 'Do not make use of the skins and sinew of dead animals."'

"The Messenger of Allah wrote to us: 'Do not make use of the skins and sinew of dead animals."'