Thus the establishment of the two great mosques of Fes, the al-Qarawiyyin ('Mosque of the Kairouanis') and the Andalusian Mosque, is traditionally ascribed to his reign, in 859.
The establishment of the two significant mosques in Fes, al-Qarawiyyin ('Mosque of the Kairouanis') and the Andalusian Mosque, is historically linked to his rule, which began in 859.