Leviticus 14:11 instructs presenting the cleansed leper before the Lord — verse 23 specifies this happens on the eighth day, continuing the same ritual.

Leviticus 14:10 lists the offerings for the eighth day — verse 23 then says the man is brought to the priest on that day, completing the ceremony.

Numbers 6:10 also has an eighth-day offering for a defiled Nazirite — same day and similar bird offering, though different persons.