Вайикра 19:19 Комментарий: Tze'enah Ure'enah, Rashi, Ibn Ezra & Ramban

“You shall not let your cattle mate with a different kind” [19:19]. You should not cause that an ox should mate with a donkey or the opposite. Similarly with all domestic or wild animals, you should not mate that which is not the same species. Bahya writes here. The reason is because the mixture is forbidden because the Holy One created each species separately, even the vegetation, each one separately. Each one has a separate constellation in heaven that pushes and causes them to grow. When the person makes an ox and donkey mate together, a new creature comes from them that is half ox and half donkey. He changes the creation of the Holy One and makes himself like the Holy One, who did not create such a species, as he made. That is to say, he wants to show more wisdom in creation. Similarly, all the vegetation and plants were each created the way they should be. The person who makes mixtures by sowing wheat or grain in one garden, he mixes the creation that the Holy One created. He also mixes up the world of the constellations in heaven. Each constellation has one species of animal and one of vegetation. Each species also has one constellation. When the person mixes the creatures on the earth, he also mixes up the constellations in heaven and causes war among the constellations.¹¹Bahya, Leviticus, 19:19.

חקתי תשמרו ‎את YE SHALL KEEP MY ORDINANCES — These are they: “Thou shalt not cause two kinds of thy cattle to gender etc.”, (and the other ordinances laid down in this verse), for by the term חוקים are meant those enactments of the King for which no reason is given and those that precede are not of this character.

The reason for mentioning Do not interbreed different kinds of animals after the previous commandments, is to say to us: Just as the requirement to be holy implies that you must not do violence to other human beings, so also it implies that you must not do anything to animals which alters the work of God. This is why Scripture says, Preserve My decrees: you must preserve each species, and not interbreed one species with another.