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

“cannot afford so much.” The Hebrew is idiomatic: “his hand cannot reach.” The same idiom is in Leviticus 14:22, 31 and 14:32.