Leviticus 14:37

And he that owneth the house shall come and tell the priest, saying, It seemeth to me [there is] as it were a plague in the house:

Then the priest shall command that they empty the house, before the priest go [into it] to see the plague, that all that [is] in the house be not made unclean: and afterward the priest shall go in to see the house:

Then the priest shall go out of the house to the door of the house, and shut up the house seven days:

And the priest shall come again the seventh day, and shall look: and, behold, [if] the plague be spread in the walls of the house;