{Eight mates}: Meaning, eight kinds. {Of the sheep, two, and of the goats, two}: a male and a female, and the singular of each pair is a 'zauj' (mate). {Say, 'Has He forbidden the two males'}: phrased as an interrogation.
(p. 102) {Or the two females, or that which the wombs of the two females contain}: of male or female; meaning, or has He forbidden all of that? For He has not forbidden anything of it.
{Inform me with knowledge if you are truthful}: that Allah has forbidden this; and this refers to what they have forbidden of the livestock.