Including: The Najdat were the sub-sect of the Kharijite movement that followed Najda ibn 'Amir al-Hanafi, and in 682 launched a revolt against the Umayyad Caliphate in the historical provinces of Yamama and Bahrain, in central and eastern Arabia.
Asserting that human arbitration was invalid as God's command was clear that the rebels (in this case Mu'awiya) had to be fought and overcome, some of Ali's soldiers left the army.
Denouncing the new caliph Yazid, the Qurayshi leader Abd Allah ibn al-Zubayr established himself in the sanctuary of Mecca.
[5] When Yazid sent an army to end the rebellion in 683 and Mecca was besieged, Kharijites assisted Abd Allah ibn al-Zubayr in defending the city.
Kharijites, after discovering that Ibn al-Zubayr had proclaimed caliphate and did not share their view of Uthman and condemned his murder, abandoned him.
[8][9] Doctrinal differences between Nafi and Najda ibn Amir al-Hanafi, another of the leaders, led to a split within the group.
[10] In 687 a group led by Atiyya ibn al-Aswad split up and headed to Sistan where they founded their own Kharijite branch.