Abu Sulayman Da'ud

Abu Sulayman Da'ud ibn Abi al-Muna ibn Abi Faris (in other sources: Abu Sulayman Dawud ibn Abi l-Muna ibn Abi Fanah; ) was a 12th-century Arab Christian physician and astrologer who served at the royal courts of Fatimid Egypt and the Kingdom of Jerusalem. then part of the Latin East ruled by the Franks. The Franks were also Christians but did not speak Arabic well, and so many native Christians regarded the neighboring Muslim rulers as more approachable.

Abu Sulayman moved to Egypt to serve the last Fatimid caliphs. He became renowned for his skills in medicine and astrology. Amalric became impressed with Abu Sulayman's skill and requested his service. With the permission of the Fatimid caliph al-Adid, Abu Sulayman moved to Jerusalem with his five sons. It is not known whether this occurred in 1163, 1164, or 1167; historian Ann Zimo believes 1167 to be the most likely date because the caliph was involved in a treaty signed in that year. Jerusalem fell to Saladin in 1187, and Saladin increased the family's salaries. Abu Sulayman then returned to Egypt, where he stayed until his death. His four physician sons built successful careers under Saladin's successors in Egypt and in Syria.