The examination of the suspected house by the priest. First, the house is to be emptied of its furniture, lest the latter should contract a ceremonial uncleanness in case the house were found to be leprous, but not, it will be noted, lest it should convey contagion or infection.
Then the priest is to examine the discolouration, and if it bear a suspicious appearance, the house is to be shut up for seven days. It at the end of that time the spot has spread, he is to have the part of the wall in which it shows itself taken down and carried away, and built up again with new stones and mortar and plaster, the parts adjoining to the infected place having been first well scraped.
If this treatment does not succeed in getting rid of the mischief, the priest is to determine that it is a fretting leprosy in the house: it is unclean.