Leviticus 13:55-57

English Standard Version

⁵⁵ And the priest shall examine the diseased thing after it has been washed. And if the appearance of the diseased area has not changed, though the disease has not spread, it is unclean. You shall burn it in the fire, whether the rot is on the back or on the front.

⁵⁶ “But if the priest examines, and if the diseased area has faded after it has been washed, he shall tear it out of the garment or the skin or the warp or the woof. ⁵⁷ Then if it appears again in the garment, in the warp or the woof, or in any article made of skin, it is spreading. You shall burn with fire whatever has the disease.