in communication is actually a reflection of one’s own inner self. If one uses bad language, he is just making it obvious to everybody, how far away he really is from Allah (s.w.t), since bad language and zikr of Allah (s.w.t) can’t remain on the same tongue (for long). A person who has a habit of using abusive words should either change his tongue or purify it before reciting the pure name of Allah (s.w.t), as pure and impure should not remain in one place. Or he should find a place where Allah (s.w.t) can’t hear him (if he is so willing to use bad language)