حَدَّثَنَا عُمَرُ بْنُ حَفْصٍ حَدَّثَنِي أَبِي حَدَّثَنَا الْأَعْمَشُ حَدَّثَنَا شَقِيقٌ قَالَ قَالَ عَبْدُ اللَّهِ قَالَ النَّبِيُّ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ سِبَابُ الْمُسْلِمِ فُسُوقٌ وَقِتَالُهُ کُفْرٌ
صحیح بخاری · Hadith 7076
Narrated `Abdullah: The Prophet, said, "Abusing a Muslim is Fusuq (evil doing) and killing him is Kufr (disbelief).
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020