 During their relatively short tenure , the Ayyubids ushered in an era of economic prosperity in the lands they ruled and the facilities and patronage provided by the Ayyubids led to a resurgence in intellectual activity in the Islamic world . This period was also marked by an Ayyubid process of vigorously strengthening Sunni Muslim dominance in the region by constructing numerous madrasas ( schools of Islamic law ) in their major cities . 
