Numbers 5:7

5:7 then he must confess his sin that he has committed and must make full reparation, add one fifth to it, and give it to whomever he wronged.

Numbers 6:12

6:12 He must rededicate to the Lord the days of his separation and bring a male lamb in its first year as a reparation offering, but the former days will not be counted because his separation was defiled.