Qur'an 22:28

لِّيَشْهَدُوا۟ مَنَـٰفِعَ لَهُمْ وَيَذْكُرُوا۟ ٱسْمَ ٱللَّهِ فِىٓ أَيَّامٍ مَّعْلُومَـٰتٍ عَلَىٰ مَا رَزَقَهُم مِّنۢ بَهِيمَةِ ٱلْأَنْعَـٰمِ ۖ فَكُلُوا۟ مِنْهَا وَأَطْعِمُوا۟ ٱلْبَآئِسَ ٱلْفَقِيرَ

“That they may witness [i.e., attend] benefits for themselves and mention the name of Allāh on known [i.e., specific] days over what He has provided for them of [sacrificial] animals. So eat of them and feed the miserable and poor.”

Al-Hajj 22:28 · Saheeh International