 Harun sent various presents with the emissaries on their return to Charlemagne's court, including a clock that Charlemagne and his retinue deemed to be a conjuration because of the sounds it emanated and the tricks it displayed every time an hour ticked.Portions of the fictional "One Thousand and One Nights" are set in Harun's court and some of its stories involve Harun himself.Harun's life and court have been the subject of many other tales, both factual and fictitious.