Generations came and went, and, although the descendants of Hafiz waxed strong, so also did the power of the hated Christians. Living as they did upon the very fringe of the Mussulman empire, the Moors beheld with consternation the slow encroachment of the Unbelievers--more noticeable here than farther to the southward. At intervals these enemies were driven back, but invariably they reappeared, until at length, upon the plain beneath the castle, monks came and built a monastery which they called San Sebastian. Beneath the very eyes of Abul Malek, fourth descendant of Hafiz, they raised their impious walls; although he chafed to wreak a bloody vengeance for this outrage, his hands were tied by force of circumstance. Wearied with interminable wars, the Moorish nation had sought respite; peace dozed upon the land. Men rested and took from the earth new strength with which to resume the never-ending struggle between the Crescent and the Cross, wherefore Abul Malek's rage availed him nothing. From his embrasured windows he beheld the cassocked enemies of his creed passing to and fro about their business; he heard his sacred hour of prayer desecrated by their Christian bells, and could do no more than revile them for dogs, the while he awaited the will of Allah. It was scant comfort for a man of his violent temper. But the truce threatened never to be broken. Years passed and still peace continued to reign. Meanwhile the Moor fed upon his wrongs and, from incessant brooding over them, became possessed of a fury more fanatical, more poisonous even than had been engendered by his many battles. Finally, when the wrong had bit too deep for him to endure, he summoned all his followers, and selecting from their number one hundred of the finest horsemen, he bade them make ready for a journey to Cordova; then in their presence he kissed the blue blade of his scimitar and vowed that the shackles which had hampered him and them would be struck off.