What is the ruling regarding a first wife's refusal to live in the same house with her and a second wife, and her demanding a divorce if this occurs, and what is the ruling regarding the husband if he forces his first wife to do this?

A wife has the right to a separate dwelling from the other wife, even if she did not stipulate this. She is not obligated to live with her co-wife in a single dwelling with shared facilities. The husband has no right to force her to do so, and if he compels her, he is oppressing her. In such a case, she has the right to seek divorce due to clear harm.