Numbers 30:6-8

6If a woman marries while under a vow or rash promise by which she has bound herself, 7and her husband hears of it but says nothing to her on that day, then the vows or pledges by which she has bound herself shall stand. 8But if her husband prohibits her when he hears of it, he nullifies the vow that binds her or the rash promise she has made, and the LORD will absolve her.