Original sentence: Some Shia consider Ammar's ultimate fate to be unique among the fates of Muhammad's companions, for they perceive his death at the battle of Siffin as the decisive distinguisher between the righteous group and the sinful one in the First Fitna
Edited sentence: Ammar's ultimate fate was unique than the fate of the rest of Mohammad's companions, for his martyrdom in the battle of Siffin decisively distinguished the righteous group from the sinful one in the First Fitna