Numbers 30:7-8

and her husband hear it, and hold his peace at her in the day that he heareth it; then her vows shall stand, and her bonds wherewith she hath bound her soul shall stand. But if her husband disallow her in the day that he heareth it, then he shall make void her vow which is upon her, and the rash utterance of her lips, wherewith she hath bound her soul: and Jehovah will forgive her.