﴿ مَا كَانَ لِنَبِىٍّ أَن يَكُونَ لَهُۥٓ أَسْرَىٰ حَتَّىٰ يُثْخِنَ فِى ٱلْأَرْضِ ۚ تُرِيدُونَ عَرَضَ ٱلدُّنْيَا وَٱللَّهُ يُرِيدُ ٱلْءَاخِرَةَ ۗ وَٱللَّهُ عَزِيزٌ حَكِيمٌۭ ﴾

“IT DOES NOT behove a prophet to keep captives unless he has battled strenuously on earth. You may desire the fleeting gains of this world-but God desires [for you the good of] the life to come: and God is almighty, wise.”

(It is not for any Prophet) it is not proper for any Prophet (to have captives) from among disbelievers (until he hath made slaughter) until he conquers (in the land) by means of fighting. (Ye desire the lure of this world) by taking ransoms for the prisoners of Badr (and Allah desireth (for you) the Hereafter, and Allah is Mighty) in His retribution against His enemies, (Wise) by helping His friends.