Numbers 30:1-7

1 And Moses spake unto the heads of the tribes of the children of Israel, saying, This is the thing which Jehovah hath commanded.
2 When a man voweth a vow unto Jehovah, or sweareth an oath to bind his soul with a bond, he shall not break his word; he shall do according to all that proceedeth out of his mouth.
3 Also when a woman voweth a vow unto Jehovah, and bindeth herself by a bond, being in her father's house, in her youth,
4 and her father heareth her vow, and her bond wherewith she hath bound her soul, and her father holdeth his peace at her; then all her vows shall stand, and every bond wherewith she hath bound her soul shall stand.
5 But if her father disallow her in the day that he heareth, none of her vows, or of her bonds wherewith she hath bound her soul, shall stand: and Jehovah will forgive her, because her father disallowed her.
6 And if she be [married] to a husband, while her vows are upon her, or the rash utterance of her lips, wherewith she hath bound her soul,
7 and her husband hear it, and hold his peace at her in the day that he heareth it; then her vows shall stand, and her bonds wherewith she hath bound her soul shall stand.
The American Standard Version is in the public domain.