Leviticus 13:7-8, 22, 27, 36, 51
Leviticus 13:22 NIV
If it is spreading in the skin, the priest shall pronounce them unclean; it is a defiling disease.
Leviticus 13:27 NIV
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.
Leviticus 13:36 NIV
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.