Leviticus 13:36

then the priest shall examine him, and if the itch has spread in the skin , the priest need not seek for the yellow hair ; he is unclean .

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.

Then the priest shall look on him: and, behold, if the scall be spread in the skin, the priest shall not seek for yellow hair; he is unclean.