Leviticus 14:38-40

New Living Translation

³⁸ the priest will step outside the door and put the house in quarantine for seven days. ³⁹ On the seventh day the priest must return for another inspection. If he finds that the mildew on the walls of the house has spread, ⁴⁰ the priest must order that the stones from those areas be removed. The contaminated material will then be taken outside the town to an area designated as ceremonially unclean.