Sahih Muslim | Book 22 | Hadith Number 4851

Narrated by Abu 'Ubaid, the freed slave of Ibn Azhar,
Abu 'Ubaid, the freed slave of Ibn Azhar, reported that he said 'Id (prayer) with Umar b. al-Khattab, and then said the 'Id (prayer) with 'Ali b. Abu Talib. He (the narrator further) reported: He led us in prayer before delivering the sermon and then addressed the people saying: Allah's Messenger (may peace be upon him) has forbidden you to eat the flesh of your sacrificial animals beyond three nights, so do not eat that.