 An Alid revolt led by Muhammad ibn Qasim broke out in Khurasan in early 834, but was swiftly defeated and Muhammad brought as a prisoner to the Caliph's court. He managed to escape during the night of 8 / 9 October 834, taking advantage of the Eid al-Fitr festivities, and was never heard of again. In June / July of the same year,' Ujayf ibn 'Anbasa was sent to subdue the Zutt. These were people brought from India by the Sassanid emperors and settled in the Mesopotamian Marshes. The Zutt had rebelled against caliphal authority since ca. 820, and had been regularly raiding the environs of Basra and Wasit since that time.' Ujayf was successful in encircling the Zutt and forcing them to surrender after a seven-month campaign, making a triumphal entry into Baghdad in January 835 with his numerous captives. Many of the Zutt were then sent to Ayn Zarba on the Byzantine frontier, where they fell fighting against the Byzantines.
