Numbers 5:7-8
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.
5:8 But if the individual has no close relative to whom reparation can be made for the wrong, the reparation for the wrong must be paid to the Lord for the priest, in addition to the ram of atonement by which atonement is made for him.