New Revised Standard Version
Any vow or any binding oath to deny herself, her husband may allow to stand, or her husband may nullify.

Contemporary English Version
Her husband has the final say about any promises she makes to the LORD.

New American Bible
“Any vow or any pledge that she makes under oath to humble herself, her husband may either confirm or annul.

Douay-Rheims Bible
If she vow and bind herself by oath, to afflict her soul by fasting, or abstinence from other things, it shall depend on the will of her husband, whether she shall do it, or not do it.

If she vow and bind herself by oath, to afflict her soul by fasting, or abstinence from other things, it shall depend on the will of her husband, whether she shall do it, or not do it.

and every

1 Corinthians 11:3,9 But I would have you know that the head of every man is Christ: and the head of the woman is the man: and the head of Christ is God. . . .

1 Peter 3:1-6 In like manner also, let wives be subject to their husbands: that, if any believe not the word, they may be won without the word, by the conversation of the wives, . . .

to afflict

Numbers 29:7 The tenth day also of this seventh month shall be holy and venerable unto you, and you shall afflict your souls; you shall do no servile work therein.

Leviticus 16:29 And this shall be to you an everlasting ordinance. The seventh month, the tenth day of the month, you shall afflict your souls, and shall do no work, whether it be one of your own country, or a stranger that sojourneth among you.

Leviticus 23:27,32 Upon the tenth day of this seventh month shall be the day of atonement. It shall be most solemn, and shall be called holy: and you shall await your souls on that day, and shall offer a holocaust to the Lord. . . .

Ezra 8:21 And I proclaimed there a fast by the river Ahava, that we might afflict ourselves before the Lord our God, and might ask of him a right way for us and for our children, and for all our substance.

Psalm 35:13 But as for me, when they were troublesome to me, I was clothed with haircloth. I humbled my soul with fasting; and my prayer shall be turned into my bosom.

Isaiah 58:5 Is this such a fast as I have chosen: for a man to afflict his soul for a day? is this it, to wind his head about like a circle, and to spread sackcloth and ashes? wilt thou call this a fast, and a day acceptable to the Lord?

1 Corinthians 7:5 Defraud not one another, except, perhaps, by consent, for a time, that you may give yourselves to prayer: and return together again, lest Satan tempt you for your incontinency.