Leviticus 14:21-22

21“But if he is poor and cannot afford these, he is to take one male lamb for a guilt offering to be presented in order to make atonement for him, along with two quarts of fine flour mixed with olive oil for a grain offering, one-third of a quart of olive oil,

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