Albert Barnes Commentary Deuteronomy 22:9-11

"Thou shalt not sow thy vineyard with two kinds of seed, lest the whole fruit be forfeited, the seed which thou hast sown, and the increase of the vineyard. Thou shalt not plow with an ox and an ass together. Thou shalt not wear a mingled stuff, wool and linen together." — Deuteronomy 22:9-11 (ASV)

Compare the marginal reference. The prohibition of Deuteronomy 22:10 was also dictated by compassion. The ox and the donkey, being of such different size and strength, it would be cruel to the latter to yoke them together. These two animals are mentioned as those ordinarily employed in agriculture; compare Isaiah 32:20.