Sunan an-Nasa'i 4108

سنن النسائي#4108Sahih

أَخْبَرَنَا مَحْمُودُ بْنُ غَيْلاَنَ، قَالَ حَدَّثَنَا وَهْبُ بْنُ جَرِيرٍ، قَالَ حَدَّثَنَا أَبِي قَالَ، سَمِعْتُ عَبْدَ الْمَلِكِ بْنَ عُمَيْرٍ، يُحَدِّثُهُ عَنْ عَبْدِ الرَّحْمَنِ بْنِ عَبْدِ اللَّهِ، عَنْ أَبِيهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏ "‏ سِبَابُ الْمُسْلِمِ فُسُوقٌ وَقِتَالُهُ كُفْرٌ ‏"‏ ‏.‏

It was narrated from 'Abdur-Rahman bin 'Abdullah, from his father, that:The Messenger of Allah [SAW] said: "Defaming a Muslim is evildoing and fighting him is Kufr

Scholarly Authentication

We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:

Abu GhuddahSahih Isnaad
Al-AlbaniSahih Isnaad
Zubair Ali ZaiSahih

In-book reference: 37:143