Numbers 30:4

and her father hears of her vow or the obligation to which she has pledged herself, and her father remains silent about her, ¹  then all her vows will stand, ²  and every obligation to which she has pledged herself will stand.

¹ tn The intent of this expression is that he does not object to the vow.

² tn The verb קוּם (qum) is best translated “stand” here, but the idea with it is that what she vows is established as a genuine oath with the father’s approval (or acquiescence).