Leviticus 11:38

But if any water be put upon the seed. — The case, however, is different when the grain is moistened, because the fluid softens the corn, and thus enables the defilement of the carcase to penetrate into its very fibres. The wet corn therefore is regarded in the same light as porous clay vessels which become saturated with defilement, and must be broken. (Comp. Leviticus 6:28.) By water, according to the rule which obtained during the second Temple, the seven liquids mentioned in Leviticus 11:34 are meant.