Can we judge people according to islam?

Islam teaches us not to condemn others. Leave the judging to God. Worry about, and judge, only yourself. According to Hadith, fortunate is that person who is so busy with his own faults, that he has no time to think about the faults of others. Even if you see something we don’t like in someone, you may be guilty of the same thing, but are less likely to see it in yourself.