Abu Ubayd says: I was present at the Eid with Sayyiduna Ali bin Abi Talib (may Allah be pleased with him). He offered the prayer and then delivered the sermon, saying: "The Messenger of Allah (peace and blessings be upon him) forbade us from eating the meat of our sacrifices after three days."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19204