Any vow and any binding oath to afflict herself, her husband may establish, or her husband may make void.
It is here taken for granted that all such persons as are sui juris - at their own disposal, and are likewise of sound understanding and memory, are bound to perform whatever they vow that is lawful and possible; but, if the person vowing be under the dominion and at the disposal of another, the case is different. Two cases much alike are here put and determined: - I.
Commenting on Numbers 30:3-16
Every vow, and every binding oath to afflict the soul,.... By fasting, as Aben Ezra observes; as when a vow was made, or a person bound herself by an oath to abstain from such and such food, or to fast on such a day; to keep a fast which was not appointed, to set apart a day for fasting, besides the grand and general fast...
Every vow, and every binding oath to afflict the soul, her husband may establish it, or her husband may make it void. (h) To mortify herself by abstinence or other bodily exercise.