uuh it is really very frightning. I think that's about gossiping as well,
It was narrated that Ibn Mas’ood said: “We were with the Prophet (peace and blessings of Allaah be upon him) when a man got up and left. Immediately another man spoke disparagingly of him. The Prophet (peace and blessings of Allaah be upon him) said to him: ‘Clean between your teeth.’ He asked, ‘Why do I need to clean between my teeth? I have not eaten any meat.’ He said, ‘You have eaten your brother’s flesh.’” (Classed as saheeh by al-Albaani).