Leviticus 14:29-33

Moreover, the rest of the oil that is in the priest’s palm, he shall put on the head of the one to be cleansed, to make atonement on his behalf before the Lord.

He shall then offer one of the turtledoves or young doves, which are within his means.

He shall offer what he can afford, the one as a sin offering and the other as a burnt offering, together with the grain offering. So the priest shall make atonement before the Lord on behalf of the one to be cleansed.

This is the law for him in whom there is an infection of leprosy, whose means are limited for his cleansing.” Cleansing a Leprous House

The Lord further spoke to Moses and to Aaron, saying: