Leviticus 14:18-20

New International Version - UK

¹⁸ The rest of the oil in his palm the priest shall put on the head of the one to be cleansed and make atonement for them before the Lord.

¹⁹ ‘Then the priest is to sacrifice the sin offering and make atonement for the one to be cleansed from their uncleanness. After that, the priest shall slaughter the burnt offering ²⁰ and offer it on the altar, together with the grain offering, and make atonement for them, and they will be clean.