Question: When did Zubaidah Bint Ja'Far's husband die?
Sentence (from "Harun al-Rashid"): 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.
Relevant evidence: No