Yahya related to me from Malik from Abdullah ibn Abi Bakr that Abdullah ibn Waqid said, "The Messenger of Allah ﷺ forbade eating the meat from sacrificial animals after three days."
Abdullah ibn Abi Bakr said, "I mentioned that to Amra bint Abd ar-Rahman, and she affirmed that he had spoken the truth as she had heard A'isha, the wife of the Prophet ﷺ say, 'Some people from the desert came at the time of the sacrifice in the time of the Messenger of Allah ﷺ so the Messenger of Allah ﷺ said, 'Store up for three days, and give what is left over as sadaqa.' "
She said that afterwards some one said to the Messenger of Allah ﷺ that people had been accustomed to make use of their sacrificial animals, melting the fat and curing the skins. The Messenger of Allah ﷺ said, "What about that?" They said, "You have forbidden the meat of sacrificial animals after three days." The Messenger of Allah ﷺ said, "I only forbade you for the sake of the people who were coming to you. Eat, give sadaqa and store up."
By these people, he meant the poor people who were coming to Madina.

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي بَكْرٍ، عَنْ عَبْدِ اللَّهِ بْنِ وَاقِدٍ، أَنَّهُ قَالَ نَهَى رَسُولُ اللَّهِ ﷺ عَنْ أَكْلِ لُحُومِ الضَّحَايَا بَعْدَ ثَلاَثَةِ أَيَّامٍ . قَالَ عَبْدُ اللَّهِ بْنُ أَبِي بَكْرٍ فَذَكَرْتُ ذَلِكَ لِعَمْرَةَ بِنْتِ عَبْدِ الرَّحْمَنِ فَقَالَتْ صَدَقَ سَمِعْتُ عَائِشَةَ زَوْجَ النَّبِيِّ ﷺ تَقُولُ دَفَّ نَاسٌ مِنْ أَهْلِ الْبَادِيَةِ حَضْرَةَ الأَضْحَى فِي زَمَانِ رَسُولِ اللَّهِ ﷺ فَقَالَ رَسُولُ اللَّهِ ﷺ " ادَّخِرُوا لِثَلاَثٍ وَتَصَدَّقُوا بِمَا بَقِيَ " . قَالَتْ فَلَمَّا كَانَ بَعْدَ ذَلِكَ قِيلَ لِرَسُولِ اللَّهِ ﷺ لَقَدْ كَانَ النَّاسُ يَنْتَفِعُونَ بِضَحَايَاهُمْ وَيَجْمِلُونَ مِنْهَا الْوَدَكَ وَيَتَّخِذُونَ مِنْهَا الأَسْقِيَةَ فَقَالَ رَسُولُ اللَّهِ " وَمَا ذَلِكَ " . أَوْ كَمَا قَالَ . قَالُوا نَهَيْتَ عَنْ لُحُومِ الضَّحَايَا بَعْدَ ثَلاَثٍ . فَقَالَ رَسُولُ اللَّهِ ﷺ " إِنَّمَا نَهَيْتُكُمْ مِنْ أَجْلِ الدَّافَّةِ الَّتِي دَفَّتْ عَلَيْكُمْ فَكُلُوا وَتَصَدَّقُوا وَادَّخِرُوا " .