What is the ruling regarding two sisters married to two brothers living in one house under the mentioned restrictions, and is it permissible for their sons and daughters to stay with them in the same room when sleeping?

Firstly: A wife has the right to be housed in a separate dwelling suitable for her condition and her husband's condition. It is not permissible to have her share a dwelling with his family, due to the Almighty's saying: (Lodge them where you dwell, according to your means, and do not displease them by making their lives a hardship) [Al-Talaq/6]. It is forbidden to engage in unlawful mixing, exposure of 'awrah (intimate parts), or private seclusion. The Prophet (peace be upon him) warned against the husband's relatives, saying: "The in-law is death" narrated by Al-Bukhari and Muslim.

Secondly: It is the wife's right upon her husband that he clothe her, as the Prophet (peace be upon him) said: "You should feed her when you feed yourself, and clothe her when you clothe yourself, and do not strike the face, nor revile her, nor abandon her except within the house" narrated by Abu Dawud.

Thirdly: The jewelry ('al-shabkah') is part of the dowry and is an exclusive right of the woman. If the husband takes it and sells it due to his need, then it becomes a debt upon him that he must fulfill to her.