I was with 'Ali b. Abi Talib on the occasion of the 'Id day. He started with the 'Id prayer before delivering the sermon, and said: Allah's Messenger (ﷺ) forbade us to eat the flesh of our sacrificial animals beyond three days.
Sahih Muslim Book 35, Hadith 34
← Previous Hadith Allah's Messenger, we are going to encounter the enemy tomorrow. and we do not have large knives with us. The rest of the hadith is the same, but no mention is made of this:" The people hastened and they boiled (flesh) in the earthen pots. He (the Holy Prophet), cammanded and these were turned over and the narrator narrated the whole event.

Sahih Muslim Book 35, Hadith 33 Next Hadith → He led us in prayer before delivering the sermon and then addressed the people saying: Allah's Messenger (ﷺ) has forbidden you to eat the flesh of your sacrificial animals beyond three nights, so do not eat that.

Sahih Muslim Book 35, Hadith 35