750-1258: The ‘Abbāsids and the Islamic Golden Age Scholars in an ‘Abbāsid library in Baghdad. Yahya ibn Mahmud al-Wasiti (c. 1237): The Maqamat of al-Hariri by (Public Domain) The ‘Abbāsid Dynasty rules the Caliphate from their capital in Baghdad for five centuries. The Dynasty initiates what is known as ‘The Islamic Golden Age’: A time of great social, scientific and philosophical progress.