أَوْ يُزَوِّجُهُمْ ذُكْرَانًا وَإِنَـٰثًا ۖ وَيَجْعَلُ مَن يَشَآءُ عَقِيمًا ۚ إِنَّهُۥ عَلِيمٌ قَدِيرٌ

Aw yuzawwijuhum thukrananwa-inathan wayajAAalu man yashao AAaqeeman innahuAAaleemun qadeer

Or He makes them [both] males and females, and He renders whom He wills barren. Indeed, He is Knowing and Competent.