The kohen is to examine him, and behold, if there is a white swelling in the skin and it has turned the hair white and if there is raw flesh in the swelling,
“When a man has a swelling on the skin of his body or a scab or a bright spot, and it becomes the plague-mark of tza'arat in his flesh, then he shall be brought to Aaron the kohen, or to one of his sons, the kohanim.