In Sermon (120), Imam Ali (a.s.) addressed the Khawarij after they insisted on not accepting arbitration. This sermon reflects the critical political and religious context of the time when the Islamic community was becoming fragmented. After the Battle of Siffin, the Khawarij challenged the leadership of Imam Ali and considered themselves to be on the right path. The Imam asked them whether they were all present at Siffin, highlighting the division within their ranks.

He instructed them to separate into two groups: those who were present at Siffin and those who were not, allowing him to address each group appropriately. This action signifies Imam Ali's commitment to understanding and resolving differences through dialogue. He urged the people to listen attentively, emphasizing the importance of understanding the truth.

The Imam pointed out that when the Khawarij raised the Quran on their spears, they considered them their brothers. This is a crucial point as it shows how people sometimes interpret religion to serve their interests. Imam Ali emphasized that beneath such actions lies animosity and that people should remain steadfast in their beliefs.

He asserted that had he rejected arbitration, no sin would have been upon him. This statement reflects his conviction of being on the right path, supported by the Book of Allah. He noted that during battles, their faith increased, and they demonstrated patience in the face of hardships. This teaches us the importance of maintaining faith even in difficult times.

In conclusion, the Imam made it clear that they were compelled to fight against those who were considered their brothers in Islam due to their misguided interpretations. This delivers a significant message that sometimes one must stand against their own people when they deviate from the principles of faith. The Imam emphasized the necessity of striving to come closer to one another to seek Allah’s assistance in overcoming challenges.