Sayyidah Aisha (RA) narrated: A man sought permission to visit Allah’s Messenger while I was also there. He said, “How evil is the son of the clan, or the brother of the clan.” He allowed him in, and conversed with him with tenderness. When he went away, I said, ‘O Messenger of Allah, you spoke of him as you did but afterwards relented towards him with soft speech.” He said, “O Aisha, the worst of men is he whom people avoid because of his indecent speech.”
[Bukhari 3132]