Numbers 30:11-13

11and her husband hears about it but says nothing to her and does not forbid her, then all her vows or the pledges by which she obligated herself will stand. 12But if her husband nullifies them when he hears about them, then none of the vows or pledges that came from her lips will stand. Her husband has nullified them, and the LORD will release her. 13Her husband may confirm or nullify any vow she makes or any sworn pledge to deny herself. Or to fast