The Cordoba Mosque is also the religious education and academic and cultural center of the post-Umayyad dynasty. When Khalifa abdul rahman III was in power, he founded the Islamic University with the same name in the temple, which was later expanded and funded by Khalifa Ha Mukai II, becoming the earliest institution of higher learning in the Islamic world. In addition to offering religious courses, the school also offers courses in philosophy, humanities and natural sciences. The school has a collection of 400,000 books, which not only recruits young Muslims from the East and the West to study here, but also attracts students from Europe who believe in Christianity and Judaism. The school hired famous scholars to give lectures, carried out Islamic academic research, spread Islamic culture and Greek scientific culture, became the center of the intersection of eastern and western cultures, and trained a large number of famous scholars.