Leviticus 14:19-22

19The priest shall offer the sin offering, to make atonement for him who is to be cleansed from his uncleanness. And afterward he shall kill the burnt offering.

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

21"But if he is poor and cannot afford so much, then he shall take one male lamb for a guilt offering to be waved, to make atonement for him, and a tenth of an ephah of fine flour mixed with oil for a grain offering, and a log of oil;

22also two turtledoves or two pigeons, whichever he can afford. The one shall be a sin offering and the other a burnt offering.