A few Mazdakites survived and settled in remote areas. Small pockets of Mazdakite societies are said to have survived for centuries after the Muslim conquest of Persia. Their doctrines probably mixed with radical currents of Shia Islam, influencing them and giving rise to later powerful revolutionary-religious movements in the region. The cult of al-Muqanna‘, who claimed to be the incarnation of God and had followers among the Mubaiyyidah sect of Zoroastrianism and even some Turks, upheld the laws and institutes of Mazdak. In the 9th century, the Khurramites, an egalitarian religious sect possibly originating from Mazdakism, led a revolt under the leadership of Babak Khorramdin against the Abbasid Caliphate and successfully defended large territories against the Caliphate's forces for some twenty years. The Batiniyya, Qarmatians and other later revolutionary currents of Islam may also be connected to Mazdakism and were often equated with it by contemporary authors.