It is narrated from Hazrat Abu Hurairah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Whoever withdraws from obedience to the leader and separates from the community and dies in that state, his death is a death of ignorance (Jahiliyyah). And whoever rebels against my Ummah, striking both its righteous and its wicked, not sparing its believers and not fulfilling the covenant of anyone under a covenant, he is not from my Ummah. And whoever fights under a banner without purpose, expresses anger due to tribal or linguistic prejudice, fights for that cause, helps for that cause, and is killed, then his death is also like the death of ignorance (Jahiliyyah).
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 10333
Hadith Gradingحکم دارالسلام:إسناده صحيح، لكن ظاهر الحديث أنه موقوف، م: 1848