King James Version
Or all that about which he hath sworn falsely; he shall even restore it in the principal, and shall add the fifth part more thereto, and give it unto him to whom it appertaineth, in the day of his trespass offering.English Standard Version
or anything about which he has sworn falsely, he shall restore it in full and shall add a fifth to it, and give it to him to whom it belongs on the day he realizes his guilt.New International Version
or whatever it was he swore falsely about. He must make restitution in full, add a fifth of the value to it and give it all to the owner on the day he presents his guilt offering.