Is the reward for the monthly charity given by the husband from the household expenses counted for him alone, or for him, his wife, and the children? And how can the wife and children give charity if the reward is only for the husband?

It is permissible for a woman to give charity from her husband's monthly allowance if this is explicitly or implicitly agreed upon, or if it is a well-known custom. In such a case, both of them will be rewarded for it. However, if the expenditure is without his consent and not customary, then it is not permissible, and she will not be rewarded for it; rather, she will bear a burden of sin. What is meant here is a small amount for which the husband's consent is usually known. It is permissible for a woman to give charity from her private allowance on behalf of herself, her husband, and her children without needing permission.