Bulugh al-MaramChapter 16Hadith 1685
Full Sharh — Bulugh al-Maram 1685
وَعَنْ اِبْنِ مَسْعُودٍ - رضى الله عنه - قَالَ: قَالَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -{ سِبَابُ اَلْمُسْلِمِ فُسُوقٌ, وَقِتَالُهُ كُفْرٌ } مُتَّفَقٌ عَلَيْهِ. 1 .1 - صحيح. رواه البخاري (6044) ومسلم (64).
English Translation
Ibn Mas'ud (RAA) narrated that the Messenger of Allah (ﷺ) said:: insulting a Muslim is disobedience to Allah, and fighting with him is Kufr (disbelief).” Agreed upon.
Source
Bulugh al-Maram(بلوغ المرام)
The Comprehensive Book
Hadith Number
1685