If any water — The reason of the difference is, because wet seed doth sooner receive, and longer retain any pollution and partly because such seed was not fit to be sown presently, and therefore that necessity which justified the use of the dry seed, could not be pretended in this case.
Related Commentaries of Leviticus 11:38
Leviticus 11:38
38 But if any water be put upon the seed, and any part of their carcase fall thereon, it shall be unclean unto you.