The Guide for the Perplexed
In 1166 Maimonides went to Egypt and settled in Fustat, where he gained much renown as a physician, practising in the family of Saladin and in that of his vizier Ḳaḍi al-Faḍil al-Baisami, and Saladin's successors. The title "Ra'is al-Umma" or "al-Millah" (Head of the Nation or of the Faith), was bestowed upon him. In Fustat, he wrote his "Mishneh Torah" (1180) and "The Guide for the Perplexed". Some of his writings were later discovered among the manuscript fragments in the "geniza" (storeroom) of the Ben Ezra Synagogue, located in Fustat.