The ground had long before been undermined by the efforts of a religious party hostile to the Omayyads. The descendants of Alí, who, as blood-relations, in fact descendants, of the Prophet (through his daughter Fátima), considered themselves to have the nearest right to the throne, alienated from the Omayyads the hearts of many of their subjects. There was an expectation that the house of Mohammed, should it once attain to the supreme authority, would fill the earth as full of righteousness as it was now full of iniquity. The pious professors and followers of the divine law had little liking for the rule of the reigning house, which, for all its forms of religion, was purely secular. And though the risings of the Alids were unsuccessful through the bungling of their leaders, the very failure cost the Omayyads dear; for the incapable grandchildren of the Apostle of God, who had fallen or been put to death, in the eyes of the people became martyrs, whose blood cried to heaven for vengeance.
In perfect quietness, meanwhile, another family was setting itself to work to gather in the fruits of the efforts of the Alids for its own behalf,—their cousins, the Abbásids. Abbás, from whom they traced their descent, had held a somewhat ambiguous attitude towards his nephew the Prophet. His son Abdalláh passes for one of the strongest pillars of religious tradition; but, in the eyes of unprejudiced European research, he is only a crafty liar. Abdalláh’s grandson Mohammed, and the sons of the latter, so far as they are known to us, combined considerable practical vigour with their hereditary cunning and duplicity. They lived in deep retirement in Humaima, a little place to the south of the Dead Sea, seemingly far withdrawn from the world, but which, on account of its proximity to the route by which Syrian pilgrims went to Mecca, afforded opportunities for communication with the remotest lands of Islam. From this centre they carried on the propaganda in their own behalf with the utmost skill. They had genius enough to see that the best soil for their efforts was the distant Khorásán,[[20]]—that is, the extensive north-eastern provinces of the old Persian empire. The majority of the people there had already gone over to Islam; many had embraced the new faith with ardour, and had even fought bravely on its behalf against the unbelieving populations to the north and east. But the converted Persians were held in little esteem by the dominant Arabs, who looked on them as “clients,”[[21]] and refused to accord to them the full rights to which they had a claim as Moslems. The internal wars of the Arabs, moreover, raged in those parts with exceptional violence. To the Persians it was a matter of indifference whether the Yemenites or Modarites or Rabía were victorious; but they keenly felt the devastation of their country, and their own subordinate position; and thus a great proportion of the newly-converted Persians were filled with hatred towards their Arab “brethren in the faith.” This hatred was easily turned against the reigning house, which was named as the source of all unrighteousness, and whose secular disposition must certainly have been very offensive to the truly pious. The Persians, moreover, were naturally inclined to legitimism, and to enthusiastic attachments to spiritual leaders. Accordingly they were drawn over in multitudes to the doctrine that “the house of the Prophet” alone is called to dominion over his kingdom and his Church. Well-chosen emissaries of the Abbásids canvassed for the family of the Prophet, for the Háshimids, by which expression were understood, in the first instance, the descendants of Alí. Other watchwords and fictitious sayings of Mohammed were also successfully put in circulation. Gradually and furtively the place of the Alids was taken by the Abbásids, who undoubtedly also were descendants of Háshim, and who, since descent from Mohammed in the female line was represented as unimportant, could claim to be just as nearly related to the Prophet as the others.[[22]] The main point was, that the adherents secured for the cause became entirely attached to the persons of the emissaries, so that the latter were able in the end to direct their followers as they pleased. To secure adherents there seems to have been no scruple about favouring all sorts of objectionable opinions (partly due to a mixing up of the old with the new religion) inconsistent with the fundamental laws of Islam. Of details of the progress of the agitation we know little; but so much is certain: that it was very active, that the emissaries had a regular organisation, and that frequent communication was maintained between Khorásán and the centres from which the wires were pulled—Cufa, the residence of the supreme agent, and Humaima, the home of the Abbásids. The yearly pilgrimages gave special opportunities for meeting without arousing suspicion; many important consultations may possibly have taken place in Mecca itself. Operations had long been carried on in this way, when the head of the Abbásids—either Mohammed, who died in 743, or his son Ibráhím, it is not quite certain which—discovered the man who was destined to bring the movement to a successful issue. This was Abú Moslim, a freedman whose country and descent are unknown, but who in any case was not of Arabian blood. This quondam slave united with an agitator’s adroitness and perfect unscrupulosity in the choice of his means the energy and clear outlook of a general and statesman, and even of a monarch. Within a few years he brought it about that the black banner of the Abbásids was openly unfurled (in the beginning of summer, 747). In a perfidious but masterly manner he contrived still further to foment the mutual antipathies of the Arab parties which were openly at war with each other, although Nasr, the governor, was not the only one who clearly saw that nothing less was at stake than the supremacy, and even the very life, of the Arabs. Ibráhím is even said to have given orders to Abú Moslim that, so far as possible, no Arab should be left alive in Khorásán. Soon the brave Nasr was compelled to quit the country; and immediately afterwards he died (November 748). The Khorásánians pressed steadily forwards. The chief control was in the hands of Abú Moslim, although he remained in Khorásán; not only the Persians, but also the Arab leaders, put themselves under the command of the freedman, a thing unheard-of for Arab pride. It should be added, that the Arabs of Khorásán undoubtedly had a strong strain of Persian blood, and that they had taken on much that was Persian.
A large portion of Southern Persia had not long before been seized by another of the Háshimids, Abdalláh, son of Moáwiya, a descendant of Alí’s brother Jaafar. He had had the support of the Abbásids. But this thoroughly unworthy person (for such he seems to have been) was overcome by the generals of the Omayyad Merwán II., and betook himself in flight to Abú Moslim. He had served his turn, in so far as he had thrown the empire into wilder confusion, and called the attention of the people to the family of the Prophet; now as a rival he might prove inconvenient. Abú Moslim therefore first cast him into prison, and afterwards took his life.
Babylonia, the most important province of the empire, was occupied by the troops of the Abbásids. Once more a great battle took place close to the field where Alexander had gained his final victory over Darius (middle of January 750). The men belonging to Yemenite tribes, who formed the majority of the Omayyad troops, were disinclined to stake their lives on behalf of Merwán, who was not favourably disposed towards them; and accordingly the battle was lost. Over and above this, there now arose internal struggles in Syria and Egypt, which facilitated the work of the Abbásid troops. Merwán, a tried warrior, had to flee from place to place, and soon afterwards fell, almost deserted, at the village of Búsír,[[23]] in Middle Egypt (August 750).
The head of the Abbásids was now no longer Ibráhím; he had been thrown into prison by Merwán when his complicity with Abú Moslim was discovered, and, shortly before the triumph of his party, had either died or been murdered in captivity. His brothers had fled to Cufa, and kept themselves in hiding there. Here, immediately after the occupation of the city by the Khorásánians, and before the last blow had been struck against Merwán, Abul-Abbás, now the head of the house, was proclaimed Caliph (November or December 749). In his inaugural sermon in the principal mosque, Abul-Abbás designated himself as Saffáh, i.e. “the bloodshedder;” and to this dreadful name, which has since been his standing title, he did ample justice. All Omayyads were ruthlessly struck down. The watchword was: “Vengeance for the Háshimids slain by the Omayyads.” It is, of course, possible that the Abbásids, themselves Arabs, may really have had Arab feelings in the matter, and required vengeance for the blood of their relations as such. But the actual motives were nevertheless other than these; their object was to excite the mob against the Omayyads, as being impious men and worthy of death, and to make their whole house absolutely harmless. To this end no violence or treachery was spared. Even those members of the house who had fled for mercy to the conquerors, and had been received by them, nay more, even those who had yielded only on the solemn promise that no harm should befall them, were put to death; and the Abbásids, the Caliph himself, as well as his uncles, and particularly Abdalláh, who led the pursuit of the defeated Merwán, personally gloated over the murder of their adversaries. And yet Abdalláh had only a short time before experienced an act of clemency when, while taking part in the rebellion of the Jaafarids, he had fallen into the hands of Merwán’s general. Notwithstanding the fierceness of the massacre, a few members of this very numerous Omayyad family managed to escape. Some kept themselves in hiding, and by and by were ignored or forgiven; others made their escape into the far west, where the Caliph’s power did not extend. Nor was it only Omayyad blood that was freely shed at the establishment of the Abbásid rule, whether to excite terror among its subjects, or because the new ruler was hardly able to control the lust for slaughter in his victorious troops. Syria, however, did not accommodate itself to the new dynasty without trouble. Various disturbances gave the conquerors a great deal to do from the very first. In particular, it proved an arduous task to suppress those insurgents who had placed at their head Abú Mohammed, a descendant of the first two Omayyad Caliphs.
Shortly after the death of Merwán, his last powerful supporter, Ibn Hobaira, who had taken possession of the important town of Wásit, on the lower Tigris, made his peace after he had been blockaded for a long time by Mansúr, the brother of the Caliph. By both these princely brothers he had been promised not only life, but continuance in his high office. But so lofty a personage, with a large body of adherents, who had already asserted a very independent position as governor of Babylon, harmonised ill with the new condition of affairs. Mansúr accordingly, in concert with his brother, caused him to be put to death; solemn promises and oaths had no meaning for these men. This was done, it is said, on the advice of Abú Moslim. It is more probable that Abú Moslim had a hand in making away with Abú Salama, “the vizier of the Háshimids,” who from Babylonia had directed the movement in Khorásán, and who had rendered great services in connection with the change of dynasty. It is alleged that—perhaps in full consistency with his original orders—he had, after the death of Ibráhím, shown more inclination to the Alids than to the Abbásids. In any case he stood in the way of Abú Moslim.
Saffáh appears to have been a strong ruler, who, had he lived longer, might perhaps himself have done for the empire what it was left for his follower to achieve. Great differences between the caliphate of the Abbásids and that of the Omayyads immediately emerged, due in part to the manner in which it had been set up, and in part to the personal character of the rulers. The seat of empire was transferred to Babylonia, the true centre. The power of the sovereign rested primarily on Persian troops, which were more amenable to discipline than Arabian. The Caliph no longer needed to take much account of the tribal jealousies of the Arabs, although he occasionally utilised them for his own ends. Hence he could act much more autocratically than his predecessors; the lands of the caliphate now formed much more of a political unity than before. In short, on the old soil of the great Asiatic empires, another was once more set up, which at the most was only half Arab in its character, the rest being Persian.
Even in Saffáh’s lifetime Mansúr took a prominent place as an influential counsellor, and as governor of great provinces, but it is hardly likely that the Caliph allowed himself to be led entirely by his brother.
Abú Moslim, whose people were blindly devoted to him, and who held sway like a prince in Khorásán, in 754 desired to be the leader of the pilgrimage, that is, to represent the Caliph himself before the entire Islamite world. Saffáh, however, quickly instigated Mansúr to seek this dignity for himself, so that he had to express his regret that the office had been already bestowed, and that Abú Moslim could only go as a companion to Mansúr. It seems that in the course of the pilgrimage friction arose between the parvenu who had founded the new empire and the no less self-conscious brother of the Caliph; in any case, Abú Moslim did not by any means overdo the part of a devoted servant. By his liberality he so won over the Bedouins that they declared it a pure slander to call this man an enemy of the Arabs. The two were already on their return journey when news arrived that Saffáh had died (on Sunday, 9th June 754)[[24]] at Anbár (north of Cufa), and that Mansúr had been proclaimed Caliph on the same day.
Abú Jaafar Abdalláh al Mansúr (i.e. “the victorious”) was at that time a man of over forty. Of his outward appearance we learn that he was tall and thin, and that he had a narrow face, lank hair, thin beard, and brownish complexion. What his inward character was is shown by his deeds. His mother, the Berber slave Salláma, during her pregnancy dreamed, it is said, that she had brought forth a lion, to which other lions came from all quarters to render homage.[[25]] A lion, truly, who tore in pieces all who came within his reach, unless they acknowledged him as their master!