Obadiah, the leader or Khaqan of the Khazars, adopted rabbinic Judaism two generations after their conversion.
807 HARUN AL RASHID (Persia)
Forced Jews to wear a yellow badge and Christians to wear a blue badge.
808 FEZ (Morocco)
Founded almost twenty years earlier, it became the capital of the Shiite dynasty under Idris II. Idris allowed Jews to live in their own quarter in return for an annual tax. The city soon became a commercial center and schools of Jewish learning were established. One of its earliest scholars was Judah ibn Quraysh, a Semitic linguist and grammarian who was fluent in Hebrew, Aramaic, and Arabic.
809 - 813 CIVIL WAR (Persia)
Broke out between the sons of Al Rashid - Mohammed Alemin and Abdulla Almamun. The war entailed severe persecution for non-Moslems. With Alemin's defeat, Almamun became the caliph. His reign (813-833) was marked by tolerance and the development of a philosophical form.