The husband has to be observe equity between his wives with regard to supporting them, providing them with clothing, housing, gifts, spending the nights with them, and other such material rights. It is not permissible for him to give one of them something without giving anything to the other unless she accepts this willingly. Also, a wife does not have to give her husband any of her money. However, if she gives him some of her money to help him to pay for the house expenses and support their children, this would be a good deed. Such an act would strengthen the ties of love and intimacy and her reward for doing so would be twofold; because what she spends on her husband is considered as both Sadaqah (voluntary charity) and a means of maintaining ties of kinship. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.