Leviticus 11:31-38

31These are unclean to you among all that creep: whoever doth touch them, when they are dead, shall be unclean until the evening. 32And upon whatever any of them, when they are dead, doth fall, it shall be unclean; whether it is any vessel of wood, or raiment, or skin, or sack, whatever vessel it is, in which any work is done, it must be put into water, and it shall be unclean until the evening; so it shall be cleansed. 33And every earthen vessel, into which any of them falleth, whatever is in it shall be unclean; and ye shall break it. 34Of all food which may be eaten, that on which such water cometh shall be unclean: and all drink that may be drunk in every such vessel shall be unclean. 35And every thing on which any part of their carcase falleth shall be unclean; whether an oven, or ranges for pots, they shall be broken down: for they are unclean, and shall be unclean to you. 36Nevertheless a fountain or pit, in which there is plenty of water, shall be clean: but that which toucheth their carcase shall be unclean.1 37And if any part of their carcase shall fall upon any sowing seed which is to be sown, it shall be clean. 38But if any water shall be put upon the seed, and any part of their carcase shall fall on it, it shall be unclean to you.