The Ismaili dawa was brisk in this period through a network of the dais. In 385/995, Abul Jabbar Hamdani, the Mutazalite chief Qadi of Ray (325-415/936-1025) gives a list of the dais, who visited Cairo in his "Tathbit Dala'il Nubuwwat" (p. 180) as follows:- Abu Jabala Ibrahim bin Ghassan, Jabir al-Manufi, Abul Fawaris al-Hasan bin Muhammad al-Mimadhi, Abul Hussain Ahmad bin Muhammad bin al-Kumayt, Abu Muhammad al-Tabari, Abul Hasan al-Halabi, Abu Tamim Abul Kassim al-Bukhari, Abul Wafa al-Daylami, Ibn Abi'l Dibs, Khuzayma bin Abi Khuzayma and Abu Abdullah bin al-Naman. These all dais belonged to Cairo, Tyre, Acre, Askalan, Damascus, Baghdad and Central Asia. Abul Jabbar also writes that, "At the court of the fifth Fatimid Imam al-Aziz, there are many visitors from Khwarizm and Multan, and other countries, carrying money and presents."
It must be known that the initial slip of employing the dais with officials and regular payment appeared during al-Aziz's reign. Makrizi writes in "Khitat" (2nd vol., p. 273) that, "In 378/988, the vizir Yaqub bin Killis employed 35 men and provided them with accomodation near the mosque of al-Azhar. From thence the idea developed and in Imam al-Hakim's period, the services of the dais became a full time and well remunerated profession.