The ruling on a brother looking at his brother's wife

Question:
Is it forbidden or permissible for a brother to look at his brother's wife?

Answer:
Yes, intentional looking, looking at her face or any part of her body, is forbidden, because she is a non-mahram to him, it is forbidden for him, so it is not permissible for him to look at her face or any part of her body, because he has no relationship with her, neither by kinship nor by any other cause of mahram status. Is the mere fact that she is his brother's wife? Yes, that removes her from being a non-mahram to him. So what some people have become accustomed to, that women uncover themselves before the husband's relatives, this is one of the forbidden bad customs. As for the Shari'ah, it commands hijab (covering) from the husband's relatives and others. The Prophet (peace and blessings be upon him) was asked about the husband's uncle, and he said: "The uncle is death," meaning that his danger is greater, and the likelihood of harm from him is more certain and more severe. Yes. May Allah reward you with good.