The monastery was constructed for defensive strength, with a web of minor fortresses, in an area heavily populated by Muslims. Since the Muslim era, there were abundant irrigation systems, canals, ditches and castles. In 1201, Pope Innocent III issued a papal bull for D. Arnold, successor to the first abbot, confirming possession of property owned by the monastery on its own terms. In 1212 Pope Innocent III issued a papal bull confirming all former possessions. During the reign of Pedro IV the differences between monks and residents in 1335 caused the king to receive the Stone Monastery with their vassals under his tutelage. Subsequently, the pontiffs were granted protection. The monks made several altercations, among which were the passage of merchant caravans of mules, the exploitation of the salt in the municipality of Nuevalos, water use in the villages of the region, dominion over the villages, tithe, etc.