ANSWER:

No, you must not go out in front of non mahrams like this. You must wear the loose abaya over these clothes and convince your mum that what she’s saying is not permissible in Islam. Be diplomatic but firm and show utmost respect and never raise your voice while dealing with these kind of situations with your parents. It is also not permissible to mix with non mahrams even if you are wearing abayah. Make this clear to them.

I will be visiting my mothers country soon and the common clothes women wear is salwar kameez, which is loose trousers and a dress ending at the knees, is it permissible to wear this in front of non mahram men. I want to wear a loose abaya however my mother is strictly against this. No one wears an abaya there so I will also stand out

Dealings and Attitudes with Relatives, Women clothing | November 11, 2018 3:30 am
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After my sister’s death is my brother in law still related to me or we have no relationship. Do I have to be still formal with him or just casual acquaintance.
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He talked with his grandmother , uncle secretly , due to his mother prohibition. Mother now got the news that he used to give them call on a 2 weeks basis . Now mother has cursed him and he tried his best to tell his mother let forgive them bt she doesn’t listen. Now the son is worried as mother cursed him in a big way .