Numbers 30:7-10

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.

9Every vow a widow or divorced woman pledges to fulfill is binding on her.

10If a woman in her husband’s house has made a vow or put herself under an obligation with an oath,