or on the nineteenth day from his first inspection into it; the seventh day being reckoned for the last of the first week, and the first of the second, and so on: and, behold, if the plague be spread in the house; after all the above precaution is taken: it is a fretting leprosy in the house; like that in the garment; see Gill on Lev 13:51 , it is unclean; and so not to be inhabited. (o) Hilchot Tumaat Tzarat, c. 15. sect. 1, 2.