Numbers 30:12-14

12But if her husband clearly nullifies them when he hears them, then whatever she says by way of vows or obligations will not stand. Her husband has made them void, and the Lord will release her from them.

13“Any vow or sworn obligation that would bring affliction to her, her husband can confirm or nullify.

14But if her husband remains completely silent about her from day to day, he thus confirms all her vows or all her obligations which she is under; he confirms them because he remained silent about when he heard them.