sacrifice and duty

قَالُوا۟ يَـٰٓأَيُّهَا ٱلْعَزِيزُ إِنَّ لَهُۥٓ أَبًا شَيْخًا كَبِيرًا فَخُذْ أَحَدَنَا مَكَانَهُۥٓ ۖ إِنَّا نَرَىٰكَ مِنَ ٱلْمُحْسِنِينَ

They said, "O ʿAzeez, indeed he has a father [who is] an old man, so take one of us in place of him. Indeed, we see you as a doer of good."