Jami at-Tirmidhi 1509
Jami at-Tirmidhi · Book 19: The Book on Sacrifices · What Has Been Related About It Being Disliked To Eat From The Sacrificial Meat Beyond Three Days.
Narrated Ibn 'Umar:
حَدَّثَنَا قُتَيْبَةُ ، حَدَّثَنَا اللَّيْثُ ، عَنْ نَافِعٍ ، عَنِ ابْنِ عُمَرَ ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " لاَ يَأْكُلُ أَحَدُكُمْ مِنْ لَحْمِ أُضْحِيَتِهِ فَوْقَ ثَلاَثَةِ أَيَّامٍ " . قَالَ وَفِي الْبَابِ عَنْ عَائِشَةَ وَأَنَسٍ . قَالَ أَبُو عِيسَى حَدِيثُ ابْنِ عُمَرَ حَدِيثٌ حَسَنٌ صَحِيحٌ . - وَإِنَّمَا كَانَ النَّهْىُ مِنَ النَّبِيِّ صلى الله عليه وسلم مُتَقَدِّمًا ثُمَّ رَخَّصَ بَعْدَ ذَلِكَ .
That the Prophet (ﷺ) said: "None of you should eat from the meat of his sacrificial animal beyond three days."
Grade: Sahih (Darussalam)