Sunan an-Nasa'i 4425
سنن النسائي#4425SahihAli bin Abi Talib Said:"The Messenger of Allah has forbidden you from eating the meat of your sacrificaial animals for more than three day." (Sahih)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiHasan
In-book reference: 43:65