Numbers 30:14

כל נדר וכל שבעת אסר וגו׳ EVERY VOW AND EVERY BINDING OATH [TO AFFLICT THE SOUL HER HUSBAND MAY CONFIRM IT OR HER HUSBAND MAY ANNUL IT] — Because it states that a husband may annul his wife’s vows, one might think that all vows are implied! It therefore states: “[every vow] …to afflict the soul” — he may annul only vows to afflict the soul, and these are set forth in Treatise Nedarim 79b.

כׇּל־נֵ֛דֶר וְכׇל־שְׁבֻעַ֥ת אִסָּ֖ר לְעַנֹּ֣ת נָ֑פֶשׁ אִישָׁ֥הּ יְקִימֶ֖נּוּ וְאִישָׁ֥הּ יְפֵרֶֽנּוּ׃

Every vow, and every binding oath to afflict the soul, her husband may let it stand, or her husband may make it void.