
What does Islam say about judging other people? Particularly other Muslims, for example: saying that another Muslim is not a good Muslim because they do not have a beard, or they do not wear the hijab, or because you don't see them in the masjid; what does Islam say about these negative, hurtful assumptions that many Muslims (particularly those who consider themselves to be very religious) inadvertently make?
I'm asking this because I recently got a comment from a family member ("You don't even pray/go to the mosque"), and it made me very annoyed because they're only judging me based on the outward sign of faith; it could be that I do ten times more worship than they do, except I do it in private where it's between me and Allah only. I did not argue or say anything to this family member, because I realised it would be better to keep quiet - I don't need to prove myself to this person, I only need to prove myself to Allah.
Do others agree with me / have you went through similar issues?
Jazakallahu Khair.