Leviticus 14:18-20 New International Version Anglicized (NIVUK)

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.

Leviticus 14