Abu Ubaid narrates from the freed slave of Ibn Azhar, who states: I was present with Ali bin Abi Talib (may Allah be pleased with him) on the occasion of Eid, and I heard him say: None of you should eat from the meat of his sacrifice after three days.
Hadith Referenceمسند الإمام الشافعي / كتاب العيدين والأضاحي والاستسقاء / 508
Hadith Takhrijاسناده صحيح اخرجه البيهقي : 290/9 ، وفى المعرفة السنن والآثار له (5677)۔