Leviticus 13:54-56

New King James Version

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. ⁵⁶ If the priest examines it, and indeed the plague has faded after washing it, then he shall tear it out of the garment, whether out of the warp or out of the woof, or out of the leather.