Narrated Salama bin Al-Aqua':

The Prophet (ﷺ) said, "Whoever has slaughtered a sacrifice should not keep anything of Its meat after three days." When it was the next year the people said, "O Allah's Messenger (ﷺ) ! Shall we do as we did last year?" He said, ' Eat of it and feed of it to others and store of it for in that year the people were having a hard time and I wanted you to help (the needy).

حَدَّثَنَا أَبُو عَاصِمٍ، عَنْ يَزِيدَ بْنِ أَبِي عُبَيْدٍ، عَنْ سَلَمَةَ بْنِ الأَكْوَعِ، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ مَنْ ضَحَّى مِنْكُمْ فَلاَ يُصْبِحَنَّ بَعْدَ ثَالِثَةٍ وَفِي بَيْتِهِ مِنْهُ شَىْءٌ ‏"‏‏.‏ فَلَمَّا كَانَ الْعَامُ الْمُقْبِلُ قَالُوا يَا رَسُولَ اللَّهِ نَفْعَلُ كَمَا فَعَلْنَا عَامَ الْمَاضِي قَالَ ‏"‏ كُلُوا وَأَطْعِمُوا وَادَّخِرُوا فَإِنَّ ذَلِكَ الْعَامَ كَانَ بِالنَّاسِ جَهْدٌ فَأَرَدْتُ أَنْ تُعِينُوا فِيهَا ‏"‏‏.‏