Leviticus 14:21-22

21“But if the cleansed leper is poor and his means are insufficient, then he is to take one lamb as a guilt offering to be waved to make atonement for him, and one tenth of an ephah of fine flour mixed with oil as a grain offering, and a log of oil,

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