Leviticus 14:19-22

19“Then the priest shall offer the sin offering, and make atonement for him who is to be cleansed from his uncleanness. Afterward he shall kill the burnt offering.

20And the priest shall offer the burnt offering and the grain offering on the altar. So the priest shall make atonement for him, and he shall be clean.

21“But if he is poor and cannot afford it, then he shall take one male lamb as a trespass offering to be waved, to make atonement for him, one-tenth of an ephah of fine flour mixed with oil as a grain offering, a log of oil,

22and two turtledoves or two young pigeons, such as he is able to afford: one shall be a sin offering and the other a burnt offering.