Deuteronomy 14:21

That he may eat it. — Literally, and he will eat it. The common practice, and not the intention of the writer, may be indicated. It should be remembered that these rules and restrictions were intended to raise the Israelites above the common level; not to degrade the other nations in comparison of them. Strangers were not compelled to eat what Israel refused; they were left free to please themselves.

Thou shalt not seethe a kid in his mother’s milk. — This is the last appearance of a command repeated twice in Exodus (Exodus 23:19; Exodus 34:26). See Notes there.