Leviticus 13:17

And the priest shall see him
Review him, and examine him thoroughly:

and, behold, [if] the plague be turned into white;
the raw flesh in the swelling, which looked red, is become white:

then the priest shall pronounce [him] clean [that hath] the plague;
that was supposed to have the plague of leprosy; but upon a review, and on this change of things, has not, he shall declare him free from it,

he [is] clean;
and under no obligation to the laws and rites concerning it.