Can a husband or father object to a woman becoming a Nazir

Question

According to Halacha, a husband or a father have a right to object to their wife or daughter (if their daughter is still under their father’s authority) taking a vow. My question is, does this apply to them becoming a Nazirite as well?

Answer 1

The Ramba'm codifies this in nezirus (2:17):

נשים עובדים יש להם נזירות והאב או הבעל מפר נזירות האשה אם רצה כשאר הנדרים

A woman and a slave can be nazirites, and a father or husband can nullify a woman's Naziriteship if he wants to, like other vows.

The Kesef Mishnah there brings the mishna in Nazir (62b) as the Rambam's source. The mishna says:

חומר העבדים מבנשים שהוא מפר נדרי אשתו ואינו מפר נדרי עבדו

The previous Mishna taught that the naziriteship of women includes a stringency that does not apply to slaves. This mishna adds: There is a greater stringency in the case of slaves then in the case of women, as a man can nullify the vows of his wife but he cannot nullify the vows of his slave. (Sefaria translation)

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Credit to shmosel for the source