Leviticus 11:24, 28, 31, 39

And for these ye shall be unclean: whosoever toucheth the carcase of them shall be unclean until the even.

And he that beareth the carcase of them shall wash his clothes, and be unclean until the even: they are unclean unto you.

These are unclean to you among all that creep: whosoever doth touch them, when they be dead, shall be unclean until the even.

And if any beast, of which ye may eat, die; he that toucheth the carcase thereof shall be unclean until the even.