Numbers 30:1-4

Then Moses spoke to the heads of the tribes of the sons of Israel, saying, “This is the word which the Lord has commanded:

If a man makes a vow to the Lord, or takes an oath to put himself under a binding obligation, he shall not break his word; he shall act in accordance with everything that comes out of his mouth.

“And if a woman makes a vow to the Lord, and puts herself under a binding obligation in her father’s house in her youth,

and her father hears her vow and her obligation under which she has put herself, and her father says nothing to her, then all her vows shall remain valid and every binding obligation under which she has put herself shall remain valid.