Which faction emerged during Ali’s (RA) caliphate, initially his supporters, who later rebelled against him following the arbitration at Siffin?

Explanation

– The Kharijites emerged as a faction that initially supported Ali (RA) but later rebelled against him following his acceptance of arbitration after the Battle of Siffin, which they viewed as a compromise of core religious principles.
– This group became known for their extreme positions and eventual violent opposition to mainstream Muslim leadership.
– For exams, note that a member of this faction was ultimately responsible for Ali’s (RA) assassination in 40 AH.