9th century in Iran

former state in Central Asia

thumb|250px|The late leader of the Khurramīyah movement, Babak Khorramdin was the follower of [[al-Muqanna, a Zoroastrian and Mazdaean prophet.]] The Khurramites ( , meaning "those of the Joyful Religion") were an Iranian religious and political movement with roots in the Zoroastrian movement of Mazdakism. An alternative name for the movement is the Muhammira (, "Red-Wearing Ones"; in ), a reference to their symbolic red dress.

Iranian dynasty ruling North and Central Iran (655–1349)

earthquake in Damghan County, Iran

conflict (811–813) between the brothers al-Amin and al-Ma'mun over the succession to the throne of the Abbasid Caliphate; provincial turmoil continued until the 830s

period in history which saw the rise of various Iranian dynasties in the Iranian plateau

hadith (tradition) narrated from the eighth Shia Imam

Persian dynasty from the 550s until the 11th-century

Zoroastrian rebellion

Iranian national heritage site