Narrated 'Aishah:

Some people of desert came at the time of sacrifice in the time of Apostle of Allah ﷺ. The Messenger of Allah ﷺ said: Store up for three days and give the rest as sadaqah (alms). After than the people said to the Messenger of Allah ﷺ: Messenger of Allah, the people used to benefit from their sacrifices, take and dissolve fat from them, and make water-bags (from their skins). The Messenger of Allah ﷺ said: What is that ? or whatever he said: They said: Messenger of Allah ﷺ, you have prohibited to preserve the meat of sacrifice after three days. The Messenger of Allah ﷺ said: I prohibited you due to a body of people who came to you. Now eat, give it as sadaqah (alms), and store up.

حَدَّثَنَا الْقَعْنَبِيُّ، عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ أَبِي بَكْرٍ، عَنْ عَمْرَةَ بِنْتِ عَبْدِ الرَّحْمَنِ، قَالَتْ سَمِعْتُ عَائِشَةَ، تَقُولُ دَفَّ نَاسٌ مِنْ أَهْلِ الْبَادِيَةِ حَضْرَةَ الأَضْحَى فِي زَمَانِ رَسُولِ اللَّهِ ﷺ فَقَالَ رَسُولُ اللَّهِ ﷺ " ادَّخِرُوا الثُّلُثَ وَتَصَدَّقُوا بِمَا بَقِيَ " . قَالَتْ فَلَمَّا كَانَ بَعْدَ ذَلِكَ قِيلَ لِرَسُولِ اللَّهِ ﷺ يَا رَسُولَ اللَّهِ لَقَدْ كَانَ النَّاسُ يَنْتَفِعُونَ مِنْ ضَحَايَاهُمْ وَيَجْمُلُونَ مِنْهَا الْوَدْكَ وَيَتَّخِذُونَ مِنْهَا الأَسْقِيَةَ . فَقَالَ رَسُولُ اللَّهِ ﷺ " وَمَا ذَاكَ " . أَوْ كَمَا قَالَ قَالُوا يَا رَسُولَ اللَّهِ نَهَيْتَ عَنْ إِمْسَاكِ لُحُومِ الضَّحَايَا بَعْدَ ثَلاَثٍ . فَقَالَ رَسُولُ اللَّهِ ﷺ " إِنَّمَا نَهَيْتُكُمْ مِنْ أَجْلِ الدَّافَّةِ الَّتِي دَفَّتْ عَلَيْكُمْ فَكُلُوا وَتَصَدَّقُوا وَادَّخِرُوا " .