Numbers 30:3

1 Moses spoke to the heads of the tribes of the children of Israel, saying, This is the thing which Yahweh has commanded.

2 When a man vows a vow to Yahweh, or swears an oath to bind his soul with a bond, he shall not break his word; he shall do according to all that proceeds out of his mouth.

3 Also when a woman vows a vow to Yahweh, and binds herself by a bond, being in her father`s house, in her youth,

4 and her father hears her vow, and her bond with which she has bound her soul, and her father holds his peace at her; then all her vows shall stand, and every bond with which she has bound her soul shall stand.

5 But if her father disallow her in the day that he hears, none of her vows, or of her bonds with which she has bound her soul, shall stand: and Yahweh will forgive her, because her father disallowed her.

6 If she be [married] to a husband, while her vows are on her, or the rash utterance of her lips, with which she has bound her soul,

7 and her husband hear it, and hold his peace at her in the day that he hears it; then her vows shall stand, and her bonds with which she has bound her soul shall stand.