Sahih Muslim 5100
صحيح مسلم#5100Sahihوَحَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا لَيْثٌ، ح وَحَدَّثَنِي مُحَمَّدُ بْنُ رُمْحٍ، أَخْبَرَنَا اللَّيْثُ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، عَنِ النَّبِيِّ صلى الله عليه وسلم أَنَّهُ قَالَ " لاَ يَأْكُلْ أَحَدٌ مِنْ لَحْمِ أُضْحِيَّتِهِ فَوْقَ ثَلاَثَةِ أَيَّامٍ " .
Ibn 'Umar reported Allah's Apostle (ﷺ) having said:None of you should eat the flesh 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:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 35:37