Leviticus 11:39-47

And if any beast, of which ye may eat, die; he that toucheth the carcass thereof shall be unclean until the even. And he that eateth of the carcass of it shall wash his clothes, and be unclean until the even: he also that beareth the carcass of it shall wash his clothes, and be unclean until the even. And every creeping thing that creepeth upon the earth is an abomination; it shall not be eaten. Whatsoever goeth upon the belly, and whatsoever goeth upon all fours, or whatsoever hath many feet, even all creeping things that creep upon the earth, them ye shall not eat; for they are an abomination. Ye shall not make yourselves abominable with any creeping thing that creepeth, neither shall ye make yourselves unclean with them, that ye should be defiled thereby. For I am Jehovah your God: sanctify yourselves therefore, and be ye holy; for I am holy: neither shall ye defile yourselves with any manner of creeping thing that moveth upon the earth. For I am Jehovah that brought you up out of the land of Egypt, to be your God: ye shall therefore be holy, for I am holy. This is the law of the beast, and of the bird, and of every living creature that moveth in the waters, and of every creature that creepeth upon the earth; to make a distinction between the unclean and the clean, and between the living thing that may be eaten and the living thing that may not be eaten.