Muhammad bin Salmah محمد بن سلمة بن عبد الله الباهلي · The Book of al-Fara' and al-'Atirah

"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…