This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
In 1021, the same year al-Hakim bi-Amr Allah himself disappeared from Fatimid Cairo, Hamza ibn Ali ibn Ahmad went into retreat, delegated leadership of the movement he had founded to Baha ad-Din al-Muqtana, and vanished from the historical record. What happened to him afterward is not agreed upon, by the tradition he founded or by outside observers.
Druze tradition holds that Hamza did not die in any ordinary sense but entered a period of occultation, a state of concealment from which he and al-Hakim are together expected to return at the end of time. Set against that devotional account stands a single contemporary outside source, which claims Hamza was recognized and killed near Mecca not long after his disappearance.
Neither account can be verified against the other from the surviving record, and this entry treats neither Hamza's death nor his continued concealment as a settled fact. What is not in dispute is the consequence for the movement itself, that its founder vanished at almost the same moment as the figure whose divinity he had proclaimed, leaving leadership to pass to a successor rather than to a documented death and succession.
That double disappearance, of the caliph whose divinity had been proclaimed and, in the same year, of the missionary who proclaimed it, left the young movement without either of its two central figures still visibly present. Baha ad-Din al-Muqtana carried the organizational work forward from there, but the question of what became of Hamza himself was never closed by any account both sides of the historical record agree on.