مَا كَانَ لِنَبِيٍّ أَن يَكُونَ لَهُۥٓ أَسۡرَىٰ حَتَّىٰ يُثۡخِنَ فِي ٱلۡأَرۡضِۚ تُرِيدُونَ عَرَضَ ٱلدُّنۡيَا وَٱللَّهُ يُرِيدُ ٱلۡأٓخِرَةَۗ وَٱللَّهُ عَزِيزٌ حَكِيمٞ

Maa kaana li Nabiyyin ai yakoona lahooo asraa hatta yuskhina fil ard; tureedoona aradad dunyaa wallaahu yureedul Aakhirah; wallaahu 'Azeezun Hakeem

It is not fitting for a prophet that he should have prisoners of war until he hath thoroughly subdued the land. Ye look for the temporal goods of this world; but Allah looketh to the Hereafter: And Allah is Exalted in might, Wise.

— Al-Anfal (ٱلْأَنْفَال), 8:67