`Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates from the Noble Prophet (peace and blessings be upon him) that he (peace be upon him) said: Whoever withdraws from obedience to the ruler and separates from the community, then dies in that state, his death will be like the death of the days of ignorance. And whoever fights under a blind banner (i.e., a battle whose legitimacy is not clearly established by Shariah), becomes angry for tribalism, calls towards tribalism, or supports tribalism (and does not seek Allah’s pleasure), then if he is killed, his killing will be like that of the days of ignorance. And whoever attacks my Ummah, killing the good and the bad alike, not sparing even the believer, and does not fulfill the covenant made with anyone, then he has nothing to do with me and I have nothing to do with him (i.e., he is not a Muslim).