John Gill Commentary Leviticus 14:31

"even such as he is able to get, the one for a sin-offering, and the other for a burnt-offering, with the meal-offering: and the priest shall make atonement for him that is to be cleansed before Jehovah." — Leviticus 14:31 (ASV)

[Even] such as he is able to get, the one [for] a sin
off the ring (See Gill on Leviticus 14:22).