﴿ وَمَآ أَفَآءَ ٱللَّهُ عَلَىٰ رَسُولِهِۦ مِنْهُمْ فَمَآ أَوْجَفْتُمْ عَلَيْهِ مِنْ خَيْلٍۢ وَلَا رِكَابٍۢ وَلَٰكِنَّ ٱللَّهَ يُسَلِّطُ رُسُلَهُۥ عَلَىٰ مَن يَشَآءُ ۚ وَٱللَّهُ عَلَىٰ كُلِّ شَىْءٍۢ قَدِيرٌۭ ﴾

“Yet [remember:] whatever [spoils taken] from the enemy God has turned over to His Apostle, you did not have to spur horse or riding-camel for its sake: but God gives His apostles mastery over whomever He wills - for God has the power to will anything.”

Please check ayah 59:7 for complete tafsir.