Leviticus 14:31-33

³¹One will be an offering for sin and the other will be completely burned on the altar, along with the offering of grain. By doing that, the priest will declare that the person is no longer guilty for having sinned.

³²Those are the regulations for anyone who has a contagious skin disease and who is poor and cannot afford the usual offerings, in order that he can be with people again.”

³³Yahweh also said to Aaron and Moses/me,