ANSWER:

What they have informed you is totally false. You must be completely covered in front of him and not chit-chat or hang out with him as he’s a non mahram to you. 

https://youtu.be/OvPMHo5SGZ0

Sir my question is that my sister s husband is my mehram? because someone says there is no need of face covering before him.please guid me.

Mahram |