According to Islam, both men and women have rights over each other when they enter into a marriage contract, with the husband serving as protector and supporter of the family most of the time, from his means. This guardianship has two aspects for both partners.
According to one interpretation, the husband must be financially responsible for the welfare and maintenance of his wife or wives and any children they produce, to include at a minimum, providing a home, food, and clothing. In return, it is the duty of the wife to safeguard the husband’s possessions and protect how wealth is spent.
If the wife has wealth in her own capacity she is not obliged to spend it upon the husband or children, as she can own property and assets in her own right, so the husband has no right for her property and assets except by her wishes. A pre-marital agreement of the financial expectation from the husband is in the mahr, given by him to the wife for her exclusive use, which is included as part of his financial responsibility.