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