Aw yuzawwijuhum zukraananw wa inaasanw wa yaj'alu mai yashaaa'u 'aqeemaa; innahoo 'Aleemun Qadeer
Or He makes them [both] males and females, and He renders whom He wills barren. Indeed, He is Knowing and Competent.
1 Mufti Taqi Usmani
Or He combines for them couples, both males and females, and makes whom He wills barren. Surely, He is All-Knowing, Very-Powerful.