9 May 1019 during the apostasy of al-Darazi and again between 1021 and 1026 during a period of persecution by the Fatimid caliph al-Zahir li-I'zaz Din Allah for those who had sworn the oath to accept the call.

Persecutions started forty days after the disappearance into Occultation of al-Hakim, who was thought to have been converting people to the Unitarian faith for over twenty