(in continuation of above). Then I witnessed (the 'Its) with ʿAli bin Abi Talib, and he too offered the ʿId prayer before the sermon and then delivered the sermon before the people and said, "Messenger of Allah ﷺ has forbidden you to eat the meat of your sacrifices for more than three days."  

إِنَّ رَسُولَ اللَّهِ ﷺ نَهَاكُمْ أَنْ تَأْكُلُوا لُحُومَ نُسُكِكُمْ فَوْقَ ثَلاَثٍ وَعَنْ مَعْمَرٍ عَنِ الزُّهْرِيِّ عَنْ أَبِي عُبَيْدٍ نَحْوَهُ  

He led us in prayer before delivering the sermon and then addressed the people saying: Messenger of Allah ﷺ has forbidden you to eat the flesh of your sacrificial animals beyond three nights, so do not eat that.  

فَصَلَّى لَنَا قَبْلَ الْخُطْبَةِ ثُمَّ خَطَبَ النَّاسَ فَقَالَ إِنَّ رَسُولَ اللَّهِ ﷺ قَدْ نَهَاكُمْ أَنْ تَأْكُلُوا لُحُومَ نُسُكِكُمْ فَوْقَ ثَلاَثِ لَيَالٍ فَلاَ تَأْكُلُوا  

"The Messenger of Allah has forbidden you from eating the meat of your sacrificaial animals for more than three day." (Sahih ) (Using translation from Nasāʾī 4425)  

إِنَّ رَسُولَ اللهِ ﷺ قَدْ «نَهَاكُمْ أَنْ تَأْكُلُوا لُحُومَ نُسُكِكُمْ فَوْقَ ثَلَاثِ لَيَالٍ»