Ash-Shuraa 42:50
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.
Or He combines for them couples, both males and females, and makes whom He wills barren. Surely, He is All-Knowing, Very-Powerful.