Ed-Dahhak b. Kays al-Shaybani and its role in the weakening of the Umayyad State

A historical figure who had a prominent role in weakening the Umayyad state and its fall. This paper deals with an investigative study in the case of Ad-Dahhak bin Qais al-Shaibani and his role in weakening the Umayyad state in the second century AH -127-129 AH-), and the revolt of al-Dahhak bin Qais al-Shaibani, which is one of the revolutions The Kharijites in the first era of the history of the Islamic state in general, and the Kharijite revolutions at the end of the Umayyad era in particular, which took place at the end of the Umayyad era, The research defines the reality of the Umayyad state, its origin, history, founder and policy. The research tackled the definition of the last Umayyad caliph who lived through the revolution, the caliph Muhammad ibn Marwan al-Jaadi. The research deals with the definition of the Kharijites, from their origins, their names, and the most prominent of these leaders and movements that existed in the Umayyad era, and the reasons for their exit. The research discusses the Dahhak revolution, its causes, and its impact on the Umayyad state. It concludes that there is a major and effective role for Dahhak's revolution in the weakening and fall of the Umayyad dynasty.