Leviticus 13:7, 8, 22, 27, 36, 51

But if the rash does spread in their skin after they have shown themselves to the priest to be pronounced clean, they must appear before the priest again.

The priest is to examine that person, and if the rash has spread in the skin, he shall pronounce them unclean; it is a defiling skin disease.

If it is spreading in the skin, the priest shall pronounce them unclean; it is a defiling disease.

On the seventh day the priest is to examine that person, and if it is spreading in the skin, the priest shall pronounce them unclean; it is a defiling skin disease.

the priest is to examine them, and if he finds that the sore has spread in the skin, he does not need to look for yellow hair; they are unclean.

On the seventh day he is to examine it, and if the mold has spread in the fabric, the woven or knitted material, or the leather, whatever its use, it is a persistent defiling mold; the article is unclean.