Must the wife adhere to the conditions set by the husband regarding how to spend the money he sends her to cover her needs during his travel?

The husband is obligated to provide for his wife, covering her needs for food, drink, clothing, and housing. The default is for him to bring the food, but he may also give her money to buy her necessities, and she should return the remainder. The maintenance is estimated based on sufficiency and varies depending on the financial status of the spouses, whether they are affluent or in straitened circumstances. The wife is not obliged to obey her husband in eating a specific food or preparing it in a certain way, unless there is harm or excessive burden involved.