Leviticus 13:53-55

New King James Version

⁵³ “But if the priest examines it, and indeed the plague has not spread in the garment, either in the warp or in the woof, or in anything made of leather, ⁵⁴ then the priest shall command that they wash the thing in which is the plague; and he shall isolate it another seven days. ⁵⁵ Then the priest shall examine the plague after it has been washed; and indeed if the plague has not changed its color, though the plague has not spread, it is unclean, and you shall burn it in the fire; it continues eating away, whether the damage is outside or inside.