Azariqa

Likewise, the Khawarij, when they split away from the way of the Messenger , the companions, Amongst themselves we find that there were different groups and factions among them.

From them you had the Azariqah, the Haruriya, the first group of Khawarij, the Najdaat.

Groups among themselves, even them themselves as a group were split and had many factions.

So we see the actualization, ikhwan, of that which the Messenger ﷺ or that which Allah subhanahu wa ta'ala informs us of in the Qur'an.