Then I saw ʿAli bin Abi Talib ؓ after that on the day of Eid; he started with the prayer before the khutbah and he prayed with no adhan or iqamah. Then he said: I heard the Messenger of Allah ﷺ forbidding (the people) to leave any of the meat of their sacrifice after three days. (Using translation from Aḥmad 587)
سَمِعْتُ رَسُولَ اللهِ ﷺ «يَنْهَى أَنْ يُمْسِكَ أَحَدٌ مِنْ نُسُكِهِ شَيْئًا فَوْقَ ثَلَاثَةِ أَيَّامٍ»