Is it permissible for a man married to two women to separate his children by placing each group in a separate house, so that the children of one wife do not see the children of the other?

There is no harm in separating children and wives in residence if the husband deems it beneficial. The fundamental principle is that it is not permissible for wives to live together in one residence unless they consent, due to the potential for harm and animosity among them. However, this does not imply abandonment or cessation of visits. Rather, children should be raised to show affection and compassion, and wives should be instructed to visit and communicate with each other, clarifying the rights of each individual towards the others.