815. hadíth
"سِبَابُ اَلْمُؤْمِنِ فُسُوقٌ قِتَالُ اَلْمُؤْمِنِ كُفْرٌ أَكْلُ لَحْمِهِ مِنْ مَعْصِيَةِ اَللَّهِ عَزَّ وَ جَلَّ حُرْمَةُ مَالِهِ كَحُرْمَةِ دَمِهِ".
The Prophet (saws) said; "Insulting a believer is wickedness, fighting a believer is disbelief, consuming his flesh (backbiting) is disobedience to Allah (swt), the Mighty and Majestic, and the sanctity of his wealth is like the sanctity of his blood."