Musannaf Ibn Abi Shaybah 25891 — Atirah and fara'ah

Ibrahim bin Maysarah and Ibn Tawus report from his father; he said: The Prophet (peace and blessings be upon him) was asked about fara', and he (peace and blessings be upon him) said: "Slaughter the first offspring if you wish. But if you raise it until it grows big, then carry loads on it in the path of Allah or maintain the ties of kinship with it, that is better than slaughtering it in such a way that its flesh mixes with its hair."