In the Name of Allah, the Most Merciful, may His Salaah and Salaam be upon His last Messenger Muhammad
This fatwa was taken from: written fatawa of Noor-‘al-adaarb: Marriage (Nikah)
Question:
someone asks saying whenever I order my wife, she replies saying ‘Insha’allah I will do or I won’t’. What’s the ruling for this?
Answer:
Sheikh: she must comply to what you ordered her to do as long as there is no harm on her, or disobedience towards Allah and His Messenger. The Prophet peace be upon him said (if ordered anyone to fall in prostration to anyone else, I would have commanded the wife to prostrate to her husband for the greatness of his rights on her), but as noted earlier, provided that there is no harm on her (in doing what you ordered her to do) or disobedience towards Allah and His Messenger. If it was the disobedience towards Allah and His Messenger, she does not have the right to agree with you, and also you have no right to order her with that; and if there is a harm to be caused for her, you are not permissible to do so because it is not kind to her.
The Arabic version of this fatwa was taken from here