Numbers 30:15

But if he be wholly silent at her from day to day, then shall he bind upon her all her vows; and he shall confirm to her the obligations [which she has bound] upon herself, because he held his peace at her in the day in which he heard her.

But if he shall any ways make them void after that he hath heard them; then he shall bear her iniquity.

But if he makes them null and void after he has heard them, then he shall bear her iniquity.”