(28) باب التَّغْلِيظِ فِيمَنْ قَاتَلَ تَحْتَ رَايَةٍ عُمِّيَّةٍ
It was narrated that Jundab bin 'Abdullah said:
"The Messenger of Allah [SAW] said: 'Whoever fights for a cause that is not clear, advocating tribalism, getting angry for the sake of tribalism, then he has died a death of Jahiliyyah.'" (ID)
Reference (ID): Sunan an-Nasa'i 4115 (ID)
In-book reference (ID): Book 37, Hadith 150 (ID)
English translation (ID): Vol. 5, Book 37, Hadith 4120 (ID)