Numbers 30:10-14

10However, if she vowed in her husband’s house or bound herself by a pledge with an oath,

11and her husband heard it, but said nothing to her and did not disapprove of her [making the vow], then all her vows and every pledge by which she bound herself shall stand.

12But if her husband absolutely annuls them on the day he heard them, then whatever proceeds from her lips concerning her vows or concerning her pledge shall not stand. Her husband has annulled them, and the Lord will forgive her.

13“Every vow and every binding oath to humble herself, her husband may confirm it or her husband may annul it.

14But if her husband says nothing to her [concerning the matter] from day to day, then he confirms all her vows or all her pledges which are on her. He has confirmed them because he said nothing to her on the day he heard them.