Jami` at-Tirmidhi 1509
جامع الترمذي#1509Sahihحَدَّثَنَا 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 .
Narrated Ibn 'Umar:That the Prophet (ﷺ) said: "None of you should eat from the meat of his sacrificial animal beyond three days
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 19:20