Is it permissible for a husband to take his wife who has no children with him on a trip because he needs her?

Question:
He says: Honorable Shaykh, may Allah grant you success. He says: I am married to two women; one has children and the other does not. He says: I am an officer in the army, and I am going to Ta'if for a course there. Is it permissible for me to take the wife who has no children with me because I need a wife to be with me there? I will come to Riyadh every week or every two weeks, as far as I am able.

Answer:
If the wife who has children is content to stay behind and you are content to travel with the other, there is nothing wrong with it. If she is not content, then drawing lots is necessary. The Prophet (peace and blessings be upon him), when he wanted to travel, would draw lots among his wives, and he would travel with the one whose lot was drawn. Yes.