We did not eat the flesh of sacrificed animals beyond three (days), but then Messenger of Allah ﷺ commanded us to make it a provision for journey and cat it (beyond three days).
كُنَّا لاَ نُمْسِكُ لُحُومَ الأَضَاحِيِّ فَوْقَ ثَلاَثٍ فَأَمَرَنَا رَسُولُ اللَّهِ ﷺ أَنْ نَتَزَوَّدَ مِنْهَا وَنَأْكُلَ مِنْهَا يَعْنِي فَوْقَ ثَلاَثٍ