Al-An'am 6:143

Thamaniyata azwajin mina adda/niithnayni wamina almaAAzi ithnayni qul aththakarayniharrama ami alonthayayni amma ishtamalat AAalayhiarhamu alonthayayni nabbi-oonee biAAilmin in kuntum sadiqeen

[They are] eight mates - of the sheep, two and of the goats, two. Say, "Is it the two males He has forbidden or the two females or that which the wombs of the two females contain? Inform me with knowledge, if you should be truthful."

(Allah has created) eight pairs: two of sheep and two of goats. Say, “Is it the two males that He has prohibited or the two females, or whatever the wombs of the two females contain? Tell me on the basis of knowledge if you are true.”