The founder of the Abbasid dynasty called Muhammad Al-Imam who took control in 716. It is possible that this is the contemporary Mehmed referred to by John of Damascus as leading the Ishmaelies. He tried to unite the Kaysanites and the Sunnis. Under Abbasid influence a new Quran using materials from the Umayyads "book of the Arabs and from the Kaysanites Ahsana al-Hadith was composed.
==750 The Umayyad Retreat==
The Abbasids did their best to eradicate any Umayyad legacy. The Jewish advisers of the Umayyads established Karate Judaism became Isawiyya to preserve themselves from the Abbasid wrath while the Judeo-Islamic Umayyads continued to rule in Cordoba, Spain until the year 1030. The Judeo-Sufi dynasty of Maimonides also arose in Cordoba. Early Spanish copies of the Quran might expose differences between the Umayyad Qurans and the Abbasid Qurans.