Marj Rahit in August. The pro-Zubayrid Qays under Dahhak's leadership were slaughtered and many of their senior leaders were slain. Marwan's accession was a turning point as Syria was reunited under the Umayyads and the Umayyads' focus was turned to regaining lost territories. Marwan and his son Abd al-Aziz expelled the Zubayrid governor of Egypt with the help of local tribes. The Zubayrid attack on Palestine led by Mus'ab was repulsed, but an Umayyad campaign to retake the Hejaz was defeated near Medina. Marwan dispatched Ibn Ziyad to restore Umayyad control in Iraq. After Marwan died in April 685, he was succeeded by his son Abd al-Malik. Eastern provinces About the time of caliph Yazid's death, the Umayyad governor of Sijistan (present-day eastern Iran), Yazid ibn Ziyad, faced a rebellion of the Zunbil in the eastern dependency of Zabulistan, who captured Ibn Ziyad's brother Abu Ubayda. Yazid ibn Ziyad attacked the Zunbil but was defeated and killed. His brother Salm, the Umayyad governor of Khurasan, which comprised present-day northern Iran as well as parts of Central Asia and present-day Afghanistan, sent Talha ibn Abd Allah al-Khuza'i as the new governor of Sijistan. Talha ransomed Abu Ubayda but died shortly afterwards. The weakening of central authority resulted in the outbreak of tribal factionalism and rivalries that the Arab emigrants of the Muslim armies had brought with them in the conquered lands. Talha's successor, who was from Rabi'a tribe, was soon driven out by the Rabi'a's tribal opponents from the Mudar. Tribal feuds consequently ensued, which continued at least until the arrival of the Zubayrid governor Abd al-Aziz ibn Abd Allah ibn Amir at the end of 685. He put an end to the inter-tribal fighting and defeated the Zunbil rebellion. In Khurasan, Salm kept the news of caliph Yazid's death secret for some time. When it became known, he obtained from his troops temporary allegiance to himself, but was soon after expelled by them. On his departure in the summer of 684, he appointed Abd Allah ibn Khazim al-Sulami, a Mudarite, as governor of Khurasan. Ibn Khazim recognized Ibn al-Zubayr but was overwhelmed by the Rabi'a–Mudar feuds. The Rabi'a opposed Zubayrid rule due to their hatred of the Mudarite Ibn Khazim, who ultimately suppressed them, but soon after faced rebellion from his erstwhile allies from the Banu Tamim. The inter-tribal warfare over control of Khurasan continued for several years and Ibn