Leviticus 5:16
16 He shall also make restitution for what he has done amiss in the holy thing and shall iadd a fifth to it and give it to the priest. And the priest shall make atonement for him with the ram of the guilt offering, and he shall be forgiven.
Leviticus 6:5
5 or anything about which he has sworn falsely, he shall nrestore it in full and shall oadd a fifth to it, and give it to him to whom it belongs on the day he realizes his guilt.
Leviticus 22:14
14 And if anyone eats of a holy thing unintentionally, he shall badd the fifth of its value to it and give the holy thing to the priest.
Numbers 5:7
7 he shall kconfess his sin that he has committed.1 And he shall make full restitution for his wrong, ladding a fifth to it and giving it to him to whom he did the wrong.