It has been narrated on the authority of Abu Huraira that the Messenger of Allah (ﷺ) said:One who defected from obedience (to the Amir) and separated from the main body of the Muslims - if he died in that state-would die the death of one belonging to the days of Jahiliyya (i.e. would not die as a Muslim). One who fights under the banner of a people who are blind (to the cause for which they are fighting, i.e. do not know whether their cause is just or otherwise), who gets flared up with family pride, calls (people) to fight for their family honour, and supports his kith and kin (i.e. fights not for the cause of Allah but for the sake of this family or tribe) - if he is killed (in this fight), he dies as one belonging to the days of Jahiliyya. Whoso attacks my Ummah (indiscriminately) killing the righteous and the wicked of them, sparing not (even) those staunch in faith and fulfilling not his promise made with those who have been given a pledge of security - he has nothing to do with me and I have nothing to do with him
It has been narrated (through a different chain of transmitters) on the authority of Abu Huraira that the Messenger of Allah (ﷺ) said:Whoever defects from obedience (to the Amir) and separates from the main body of the Muslim - and dies in that state - dies the death of one belonging to the days of jahiliyya. And he who is killed under the banner of a man who is blind (to the cause for which he is fighting), who gets flared up with family pride and fights for his tribe is not from my Ummah, and whosoever from my followers attacks my followers (indiscriminately) killing the righteous and the wicked of them, sparing not (even) those staunch in faith and fulfilling not his obligation towards them who have been given a pledge (of security), is not from me (i.e. is not my follower)