[~~نهال~~]

Hārūn al-Rashīd (‎; properly pronounced Hārūn ar-Rashīd; English: Aaron the Upright, Aaron the Just, or Aaron the Rightly Guided) (17 March 763 or February 766 – 24 March 809) was the fifth Arab Abbasid Caliph in Iraq. He was born in Rey, Iran, close to modern Tehran. His birth date remains a point of discussion, though, as various sources give the dates from 763 to 766).

He ruled from 786 to 809, and his time was marked by scientific, cultural and religious prosperity. Art and music Hamd o Na'at also flourished significantly during his reign. He established the legendary library Bayt al-Hikma ("House of Wisdom").[citation needed]