Musannaf Ibn Abi Shaybah 40717 — Reports on the Khawarij

Asim bin Damrah said: The Khawarij rose up against the arbitration and raised the slogan: "There is no rule except Allah's." On this Sayyiduna Ali (may Allah be pleased with him) said: "Indeed, there is no rule except Allah's, but these people say that there is to be no leadership at all, whereas people must have a leader, whether righteous or wicked. The believer works under his leadership, the disbeliever lives his life under it, and Allah Almighty brings it to its appointed term."