Moroccan literature is written mostly in Arabic, Berber, Hebrew, and French. Particularly under the Almoravid and Almohad empires, Moroccan literature was closely related to the literature of al-Andalus, and shared important poetic and literary forms such as "zajal", the "muwashshah", and the "maqama". Islamic literature, such as Quranic exegeses and other religious works such as Qadi Ayyad's "Al-Shifa" were influential. The University of al-Qarawiyyin in Fes was an important literary center attracting scholars from abroad, including Maimonides, Ibn al-Khatib, and Ibn Khaldun.