ハールーン・アッ＝ラシード
During Jibril's time in Baghdad, he advised Harun al-Rashid in the building of its first hospital. The hospital and connected observatory was modeled after the one in Gondeshapur where Jibril had studied medicine and served as the director. Jibril also served as the director of this new hospital, which Harun al-Rashid named after himself.