gathered around him, to an island in the river Senegal, where they founded a monastery and gave themselves up unceasingly to devotional exercises. The more devout-minded among the Berbers, stung to repentance by the thought of the wickedness that had driven their holy teacher from their midst, came humbly to his island to implore his forgiveness and receive his instructions in the saving truths of religion. Thus day by day there gathered around him an increasing band of disciples, especially from among the Lamṭūna, a branch of the Ṣanhāja clan, whose numbers swelled at length to about a thousand. ʻAbd Allāh b. Yāsīn then recognised that the time had come for launching out upon a wider sphere of action, and he called upon his followers to show their gratitude to God for the revelation he had vouchsafed them, by communicating the knowledge of it to others: “Go to your fellow-tribesmen, teach them the law of God and threaten them with His chastisement. If they repent, amend their ways and accept the truth, leave them in peace; if they refuse and persist in their errors and evil lives, invoke the aid of God against them, and let us make war upon them until God decide between us.” Hereupon each man went to his own tribe and began to exhort them to repent and believe, but without success: equally unsuccessful were the efforts of ʻAbd Allāh b. Yāsīn himself, who left his monastery in the hope of finding the Berber chiefs more willing now to listen to his preaching. At length in 1042 he put himself at the head of his followers, to whom he had given the name of al-Murābiṭīn (the so-called Almoravids)—a name derived from the same root as the ribāṭ [1031] or monastery on his island in the Senegal,—and attacked the neighbouring tribes and forced the acceptance of Islam upon them. The success that attended his warlike expeditions appeared to the tribes of the Sahara a more persuasive argument than all his preaching, and they very soon came forward voluntarily to embrace a faith that secured such brilliant successes to the arms of its adherents. ʻAbd Allāh b. Yāsīn died in 1059, but the movement he had initiated lived after him and many heathen tribes of Berbers came to swell the numbers of their Muslim fellow-countrymen, embracing their religion at the same time as the cause they championed, and poured out of the Sahara over North Africa and later on made themselves masters of Spain also. [1032]