Page:William Muir, Thomas Hunter Weir - The Caliphate; Its Rise, Decline, and Fall (1915).djvu/305

 276 dangerously to assail the Empire, and as often beaten back. Ever and anon, for ages, these Khawārij "went forth" (as the name implies) on their desperate errand, a thorn in the side of the Caliphate, and a terror to the well-disposed.