Musnad Ahmad 25:943

Hajjaj ibn Muhammad narrated to us, from Ibn Jurayj, who said: Ikrimah, the freed slave of Ibn Abbas, informed me, claiming that Ibn Abbas informed him: That the Prophet, peace and blessings of Allah be upon him, distributed sheep on the Day of Sacrifice among his companions and said: "Slaughter them for your Umrah, for they suffice for you." And Sa'd ibn Abi Waqqas received a billy goat.