Sunan an-Nasa'i 4427
It was narrated from Ibn Khabbab  - who is 'Abdullah bin Khabbab - that:
Abu Sa 'eed Al- Kahudri arrived from a jouney and his family offered him some meat from the sacrificial animal. He said: "I am not going to eat it until I ask about it," So he went to his half-brother through his mother, Qatadah bin An- Nu man who had been presently at Badr, and asked him about that. He said: "The opposite of what you were forbidden occurred after that, and (Permission was granted) to eat the sacrificial meat after three days" (Sahih )
أَخْبَرَنَا عِيسَى بْنُ حَمَّادٍ، زُغْبَةُ قَالَ أَنْبَأَنَا اللَّيْثُ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ، عَنِ ابْنِ خَبَّابٍ، - هُوَ عَبْدُ اللَّهِ بْنُ خَبَّابٍ - أَنَّ أَبَا سَعِيدٍ الْخُدْرِيَّ، قَدِمَ مِنْ سَفَرٍ فَقَدَّمَ إِلَيْهِ أَهْلُهُ لَحْمًا مِنْ لُحُومِ الأَضَاحِي فَقَالَ مَا أَنَا بِآكِلِهِ حَتَّى أَسْأَلَ ‏.‏ فَانْطَلَقَ إِلَى أَخِيهِ لأُمِّهِ قَتَادَةَ بْنِ النُّعْمَانِ - وَكَانَ بَدْرِيًّا - فَسَأَلَهُ عَنْ ذَلِكَ فَقَالَ إِنَّهُ قَدْ حَدَثَ بَعْدَكَ أَمْرٌ نَقْضًا لِمَا كَانُوا نُهُوا عَنْهُ مِنْ أَكْلِ لُحُومِ الأَضَاحِي بَعْدَ ثَلاَثَةِ أَيَّامٍ ‏.‏