Leviticus 13:58-59

New Revised Standard Version Catholic Edition

⁵⁸ But the cloth, warp or woof, or anything of skin from which the disease disappears when you have washed it, shall then be washed a second time, and it shall be clean.

⁵⁹ This is the ritual for a leprous^[a] disease in a cloth of wool or linen, either in warp or woof, or in anything of skin, to decide whether it is clean or unclean.