Leviticus 13:53-55

New Century Version

⁵³ “If the priest sees that the mildew has not spread in the cloth (either knitted or woven) or leather, ⁵⁴ he must order the people to wash that piece of leather or cloth. Then he must separate the clothing for seven more days. ⁵⁵ After the piece with the mildew has been washed, the priest must look at it again. If the mildew still looks the same, the piece is unclean, even if the mildew has not spread. You must burn it in fire; it does not matter if the mildew is on one side or the other.