After Mu'awiya's death in 680, the Muslim empire fell to
civil war. Denouncing the new caliph
Yazid, the
Qurayshi leader
Abd Allah ibn al-Zubayr established himself in the sanctuary of
Mecca. 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. However, Yazid died in November 683 and Ibn al-Zubayr proclaimed himself caliph. Kharijites, after discovering that Ibn al-Zubayr had proclaimed caliphate and did not share their view of Uthman and condemned his murder, abandoned him. Some of them went to
Yamama, in central Arabia, under the leadership of Abu Talut, whereas the majority went to Basra. In the meantime, Basran tribal chiefs expelled Ibn Ziyad and the city fell to tribal warfare. Kharijites, under the leadership of
Nafi ibn al-Azraq, took over the city, killed the deputy appointed by Ibn Ziyad and broke 140 of their comrades free from Ibn Ziyad's prison. Soon afterwards, Basrans recognized Ibn al-Zubayr and he appointed
Umar ibn Ubayd Allah ibn Ma'mar his governor there. Umar drove the Kharijites out of Basra and they escaped to
Ahwaz. Doctrinal differences between Nafi and
Najda ibn Amir al-Hanafi, another of the leaders, led to a split within the group. Najda, with his followers, returned to Yamama and the faction became known as Najdat. In 685, after some particular successes, the Kharijite faction of Abu Talut recognized Najda as their leader. Najda started raiding towns in Ibn al-Zuabyr's domains. In 687 a group led by Atiyya ibn al-Aswad split up and headed to
Sistan where they founded their own Kharijite branch. In the same year, Najda invaded
Yemen and seized it, including
Sanaa, and his lieutenant Abu-Fudayk conquered the
Hadramaut. The Najdat now controlled the most peripheral areas of the caliphate and therefore most adequate to avoid the oppression of caliphate forces. The Najdat then began their conquest of
Hejaz where, after the defeat of Abd Allah ibn al-Zubayr, they suffered an attack from
Muhammad's cousin Abd Allah ibn Abbas. Here they blocked supplies to
Mecca and
Medina and isolated
Taizz, but did not want to attack the holy villages. The Kharijite Najdat faction and Najda bin Amir al-Hanafi excommunicated Husayn bin Numayr, fighting against them in the Battle of Jabal al-Haruriyya. In this battle, eight thousand of ummayed soldier were killed, while Husayn bin Numayr managed to escape. At this point the Najdat dominated almost all of Arabia. However, an ideological split severed their ranks, between those who favored the continuation of the fight against the Umayyad "usurpers" and those who were in favor of a treaty with
Damascus. Subsequently, some of Najda's supporters began to object to certain beliefs of his and rebelled against him. The intransigents, led by 'Atiya al-it Hanafī, took refuge in the Iranian region of
Helmand, assuming the title of Atawiyya, while some more radical Najdat, led by Abu Fudayk, murdered Najda himself in 691 and took his place. They later tried to fight against the Umayyad caliph
Abd al-Malik ibn Marwan. In 692 Fudayk repelled a caliphate attack from Basra, but they were eventually defeated by the caliphate in 693, at the battle of Mushahhar. Politically exterminated, Najdat retreated into obscurity and disappeared around the tenth century. ==See also==