It must not be delayed, but restitution to man must accompany repentance towards God. Compare Matthew 5:23.
Related Commentaries of Leviticus 6:5
Leviticus 6:5
5 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 dayb of his trespass offering.