Leviticus 14:21-24

21If, however, the person is poor and cannot afford these offerings, he is to take one male lamb as a guilt offering to be waved to make atonement for him, along with a tenth of an ephah of fine flour1 mixed with olive oil for a grain offering, a log of olive oil, 22and two turtledoves or two young pigeons, whichever he can afford, one to be a sin offering and the other a burnt offering.

23On the eighth day he is to bring them for his cleansing to the priest at the entrance to the Tent of Meeting before the LORD. 24The priest shall take the lamb for the guilt offering, along with the log of olive oil, and wave them as a wave offering before the LORD.