In these alternations of religious indifference and fanaticism, the position of the Jews under Moslem domination was necessarily exposed to severe vicissitudes. Their skill as physicians and their unrivalled talent in administration rendered them a necessity to the conquerors, whose favor they had gained by the assistance rendered in the invasion, but ever and anon there would come a burst of intolerance which swept them into obscurity if not into massacre. When Mahomet I ascended the throne of Córdova, about 850, we are told that one of his first acts was the dismissal of all Jewish officials, including presumably R. Hasdai ben Ishak, who had been physician and vizier to his father, Abderrhaman II.[145] A century later their wealth was so great that when the Jew Peliag went to the country palace of Alhakem, the Caliph of Córdova, it is related that he was accompanied by a retinue of seven hundred retainers of his race, all richly clad and riding in carriages.[146] How insecure was their prosperity was proved, in 1066, when Samuel ha Levi and his son Joseph had been viziers and virtual rulers of Granada for fifty years. The latter chanced to exile Abu Ishac of Elvira, a noted theologian and poet, who took revenge in a bitter satire which had immense popular success. "The Jews reign in Granada; they have divided between them the city and the provinces, and everywhere one of this accursed race is in supreme power. They collect the taxes, they dress magnificently and fare sumptuously, while the true believers are in rags and wretchedness. The chief of these asses is a fatted ram. Slay him and his kindred and allies and seize their immense treasures. They have broken the compact between us and are subject to punishment as perjurers." We shall see hereafter how ready was the Christian mob to respond to such appeals; the Moslem was no better; a rising took place in which Joseph was assassinated in the royal palace, while four thousand Jews were massacred and their property pillaged.[147] Again they recuperated themselves, but they suffered with the Christians under the fierce fanaticism of the Almohades. Indeed, they were exposed to a fiercer outburst of wrath, for the robbery of the jewels of the Kaaba, which occurred about 1160, was attributed to Spanish Jews, and Abd-el-mumin was unsparing in enforcing his orders of conversion. Numbers were put to death and forty-eight synagogues were burnt. The Sephardim, or Spanish Jews, lost their most conspicuous doctor when, in this persecution, Maimonides fled to Egypt.[148] Still they continued to exist and to prosper, though exposed to destruction at any moment through the whims of the monarch or the passions of the people. Thus, in 1375, in Granada, two men obstructed a street in a violent altercation and were vainly adjured to cease in the name of Mahomet, when Isaac Amoni, the royal physician, who chanced to pass in his carriage, repeated the order and was obeyed. That a Jew should possess more