Is a husband entitled to refuse to help his pregnant wife care for their children except on the days she spends the night at his house?

Dividing time among wives is a religious obligation, encompassing fairness in overnight stays and companionship. It does not include emotional inclination or sexual intercourse and its preliminaries. Scholars have differed on the permissibility of a husband visiting a wife who is not on her designated day, whether at night or during the day. The Shafi'is and Hanbalis believe it is impermissible to visit at night except in cases of extreme necessity, with the obligation to make up for it. They permit daytime visits for slight needs, provided they are not prolonged and do not involve intercourse. The Hanafis hold that equality in nighttime stays is obligatory, but do not prevent visiting another wife for her needs. The Malikis prohibit such visits except for a non-sexual need. Some scholars believe that prevailing custom is the reference point if the visit does not constitute an injustice. It is permissible for the husband to check on the welfare of his other wife and her children without a prolonged stay. He can care for his children on the other wife's day by taking them to the wife whose turn it is. He must seek permission from the other wife and appease her if he wishes to stay in her house longer than usual for the children's benefit.