(16) باب مَا يُؤْكَلُ مِنْ لُحُومِ الأَضَاحِيِّ وَمَا يُتَزَوَّدُ مِنْهَا
Narrated Abu `Ubaid:
(in continuation of above). Then I witnessed (the 'Its) with `Ali bin Abi Talib, and he too offered the `Id prayer before the sermon and then delivered the sermon before the people and said, "Allah's Messenger (ﷺ) has forbidden you to eat the meat of your sacrifices for more than three days."
Reference: Sahih al-Bukhari 5573
In-book reference: Book 73, Hadith 29
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 68, Hadith 479