Which caliph sent the elephant Abul-Abbas to Charlemagne?

The caliph who sent the elephant Abul-Abbas to Charlemagne was Harun al-Rashid, the Abbasid ruler of the Islamic world. The gift formed part of a remarkable exchange of embassies between the Abbasid and Carolingian courts.

Charlemagne sent envoys eastward, and the Jewish diplomat Isaac returned with Abul-Abbas and other presents. The elephant reached Charlemagne’s residence at Aachen on 20 July 802 after traveling from Africa and crossing the Alps. Its arrival was recorded in the Royal Frankish Annals, which identify the sender as the ruler known in Latin sources as Aaron or Harun.

The gift was diplomatic as well as spectacular. Other reported presents included silks, perfume, a tent, an elaborate water clock, and ivory chess pieces. The two rulers shared concerns about the Byzantine Empire and the Umayyad rulers of Córdoba, though the relationship was an alliance of convenience rather than a formal political union.

Abul-Abbas died suddenly in 810 while Charlemagne was campaigning near the Rhine. Later stories sometimes call it a white elephant or identify its species confidently, but contemporary evidence does not establish either detail.