It is not permissible for your wife and brother to mix. Therefore, if you can ensure that they don’t meet and you have your own quarters that your brother doesn’t come into and they are segregated, you can live in your family’s house.
It is not permissible for your wife and brother to mix. Therefore, if you can ensure that they don’t meet and you have your own quarters that your brother doesn’t come into and they are segregated, you can live in your family’s house.