Is a wife's spending her entire salary on the poor considered extravagance, and does the husband have the right to object to that?

The majority of scholars hold that a mature woman has full disposal of her wealth, whether through gifts or charity, without her husband's permission. Malik, however, was of the view that this is permissible for amounts less than one-third, but for anything exceeding that, the husband's permission is required. Based on this, it is permissible for your fiancée to donate her entire salary to the poor as long as she has someone to provide for her, and this is not considered extravagance or waste. Nevertheless, it is advisable for her to consider your opinion and spend a part while keeping another part, as she and her children may need this money in the future.