Is it permissible for a man to sit with his brothers' wives at a meal, provided he observes the Islamic etiquettes?

The questioner : Well, likewise, Shaykh, regarding the issue of me, for example, living in the house with my family, and my two married brothers also live with us, and their wives are in the house, is it permissible, for example, for me to sit with them or eat with them?

The Shaykh : If their hijab and their conduct are Islamic, it is permissible. But if they are uncovering their heads, it is not permissible. And if they take their freedom in speech, laughter, and smiling, it is not permissible.