حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ حَدَّثَنَا شُعْبَةُ عَنْ مَنْصُورٍ قَالَ سَمِعْتُ أَبَا وَائِلٍ يُحَدِّثُ عَنْ عَبْدِ اللَّهِ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ سِبَابُ الْمُسْلِمِ فُسُوقٌ وَقِتَالُهُ کُفْرٌ تَابَعَهُ غُنْدَرٌ عَنْ شُعْبَةَ
صحیح بخاری · Hadith 6045
Narrated Abu Dhar: That he heard the Prophet saying, "If somebody accuses another of Fusuq (by calling him 'Fasiq' i.e. a wicked person) or accuses him of Kufr, such an accusation will revert to him (i.e. the accuser) if his companion (the accused) is innocent."
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020