Numbers 30:3-5

3“When a woman in her father’s house during her youth makes a vow to the Lord or puts herself under an obligation,

4and her father hears about her vow or the obligation she put herself under, and he says nothing to her, all her vows and every obligation she put herself under are binding.

5But if her father prohibits her on the day he hears about it, none of her vows and none of the obligations she put herself under are binding. The Lord will release her because her father has prohibited her.