Numbers 30:2 WEB

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.