referred to as "The People of Monotheism" (). In it, they pledged to abandon every previous allegiance and swear obedience to "our Lord al-Hakim, the One, the Unique, the Sole One" and to place themselves at his disposal body and soul, including all their possessions and even their children. Al-Hakim is generally portrayed in the historical sources to have been favourably disposed towards Hamza's movement. Modern historians are more skeptical about claims—mostly transmitted by hostile Sunni historians—that the Caliph actually instigated the new doctrine himself. The historian David R. W. Bryer writes that "al-Hakim played no active part in building up what was to be the Druze , nor, astute politician that he was, did he hesitate to withdraw all visible support from the movement in times of real difficulty", and that he "did not wish to be seen to be involved in the movement that was forming until he saw how the majority of the people reacted to it". Indeed, due to the disturbances provoked by the new doctrine, the Caliph forced Hamza to suspend his mission during the following year (409 AH, 1018/19 CE), which is thus not counted in the Druze calendar (which starts with the year 408 AH). It is only from May 1019 (in 410 AH), that Hamza resumed his activity, presumably with the Caliph's permission. Hamza and al-Darzi Although Hamza was the real founder of the Druze religion, it received its name by another like-minded propagandist—and soon to become rival—the Turk Anushtegin, better known by his sobriquet, al-Darzi (probably derived from the Persian word for tailor). From him, the followers of Hamza became known as the "Darzites" () and "Druzes" (from the broken plural form ). The exact relation between Hamza and al-Darzi is unclear. Yahya of Antioch presents him as a disciple of Hamza, but Ibn Zafir has it the other way round. The modern historian Marshall Hodgson attempted to discern doctrinal differences between the two, positing that al-Darzi was still within the limits of Isma'ilism, while Hamza's teachings about al-Hakim's divinity effectively put his doctrine outside the boundaries not only of Isma'ilism, but of Islam in general. This thesis was rejected by Bryer, and al-Darzi is now considered by historians as a particularly zealous adherent of al-Hakim's divinity, writing letters to senior Fatimid officials and commanders urging them to join him. Indeed, in his epistles, Hamza is critical of his colleague, both