Man Lā Yaḥḍuruh al-Faqīh

Hadith 1737
major-sinsbackbiting-slander
4946 - وَ قَالَ رَسُولُ اَللَّهِ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ : "سِبَابُ اَلْمُؤْمِنِ فِسْقٌ وَ قِتَالُهُ كُفْرٌ وَ أَكْلُ لَحْمِهِ مِنْ مَعْصِيَةِ اَللَّهِ وَ حُرْمَةُ مَالِهِ كَحُرْمَةِ دَمِهِ ".
Hadith.4946 - The Messenger of Allah (swt) (peace be upon him and his family) said: "Insulting a believer is wickedness, fighting him is disbelief, consuming his flesh (through backbiting) is disobedience to Allah (swt), and the sanctity of his wealth is like the sanctity of his blood."
Source: Shaykh Muḥammad b. ʿAlī al-Ṣaduq