(27) باب قِتَالِ الْمُسْلِمِ
It was narrated that 'Abdullah said:
"Fighting a believer is Kufr and defaming him is evildoing." (FR)
Reference (FR): Sunan an-Nasa'i 4113 (FR)
In-book reference (FR): Book 37, Hadith 148 (FR)
English translation (FR): Vol. 5, Book 37, Hadith 4118 (FR)