Bābak Khurram-Dīn (d. Ṣafar 223/January 838), was the leader of the Khurramiyya revolt during the first part of the 3rd/9th century. Although he was extremely well-known, the scant information on his genealogy, beliefs and doctrines in primary sources makes it difficult to construct a unified picture of him. While the bias of early historians and chroniclers of the period somewhat diminishes the value…