Although many north-African Jews had accepted Islam, there were but few who became real converts. Nothing was demanded of them except to profess belief in the prophetic mission of Mahomet, and occasionally to attend the mosque. In private, however, they scrupulously practised the Jewish rites, for the Almohades employed no police spies to observe the actions of the converts. Not only the common people, but also pious rabbis maintained this outward semblance of belief, soothing their conscience with the reflection that idolatry and denial of Judaism were not demanded of them, as they were simply required to utter the formula that Mahomet was a prophet, which in no way suggested idolatry. Some consoled themselves with the hope that this state would not long continue, and that the Messiah would soon appear, and deliver them from their misery. Under the disguise of Moslems, the Maghreb Jewish scholars even pursued the study of the Talmud with their usual zeal, and assembled at their colleges the studious youth, who at the same time were compelled to engage in the study of the Koran. But truly conscientious and pious men were unable to play this double part for any length of time. They threw off the hateful mask, and openly professing Judaism, suffered martyrdom, as happened in Fez, Segelmessa, Draï and other towns. The victorious Abdulmumen was not content with the possession of all Barbary; he cast longing eyes upon the fair land of Andalusia, thinking it an easy task to wrest it from the power of the Almoravide and Christian rulers, and annex it to his realm. The conquest of the Mahometan territory in southern Spain proved easy on account of internal dissensions. Cordova, the capital of Andalusia, fell into the power of the fanatical Almohades in June, 1148, and before the end of a year the greater part of Andalusia was in their hands. The beautiful synagogues which the piety, the love of splendor, and the refined taste of the Andalusian Jews had built, fell a prey to the destructive frenzy of fanaticism. The aged rabbi of Cordova, the philosopher Joseph Ibn-Zadik, witnessed this sad downfall of the oldest and most distinguished congregation, but died soon after (at the end of 1148 or the commencement of 1149). The renowned Jewish academies at Seville and Lucena were closed. Meïr, the son and successor of Joseph Ibn-Migash, went from Lucena to Toledo, and with him all those able to escape. The remainder followed the example of the African Jews, yielding for the moment to coercion and pretending to acknowledge Islam, though in private they observed their ancient faith, till they found an opportunity of openly professing Judaism. Women and children, together with the property of the exiles, fell into the hands of the conquerors, who treated feeble captives as slaves.