Leviticus 13:54-56

⁵⁴Then the priest will give orders for the thing on which the mark is, to be washed, and to be shut up for seven days more:

⁵⁵And if, after the mark has been washed, the priest sees that the colour of it is not changed and it is not increased, it is to be burned in the fire: the disease is working in it, though the damage may be inside or outside.

⁵⁶And if the priest sees that the mark is less bright after the washing, then let him have it cut out of the clothing or the leather or from the threads of the material: