(Annal. Moslem. p. 136-145,) Eutychius,
(Annal. tom. ii. p. 392, vers. Pocock,) Elmacin, (Hist. Saracen. p.
109-121,) Abulpharagius, (Hist. Dynast. p. 134-140,) Roderic of
Toledo, (Hist. Arabum, c. xviii. p. 33,) Theophanes, (Chronograph.
p. 356, 357, who speaks of the Abbassides) and the Bibliotheque of
D'Herbelot, in the articles Ommiades, Abbassides, Moervan, Ibrahim,
Saffah, Abou Moslem.]

Yet the thousands who were swept away by the sword of war might
have been speedily retrieved in the succeeding generation, if the
consequences of the revolution had not tended to dissolve the power
and unity of the empire of the Saracens. In the proscription of the
Ommiades, a royal youth of the name of Abdalrahman alone escaped the
rage of his enemies, who hunted the wandering exile from the banks
of the Euphrates to the valleys of Mount Atlas. His presence in the
neighborhood of Spain revived the zeal of the white faction. The name
and cause of the Abbassides had been first vindicated by the Persians:
the West had been pure from civil arms; and the servants of the
abdicated family still held, by a precarious tenure, the inheritance
of their lands and the offices of government. Strongly prompted by
gratitude, indignation, and fear, they invited the grandson of the
caliph Hashem to ascend the throne of his ancestors; and, in his
desperate condition, the extremes of rashness and prudence were almost
the same. The acclamations of the people saluted his landing on the
coast of Andalusia: and, after a successful struggle, Abdalrahman
established the throne of Cordova, and was the father of the Ommiades of
Spain, who reigned above two hundred and fifty years from the Atlantic
to the Pyrenees. [39] He slew in battle a lieutenant of the Abbassides,
who had invaded his dominions with a fleet and army: the head of Ala, in
salt and camphire, was suspended by a daring messenger before the palace
of Mecca; and the caliph Almansor rejoiced in his safety, that he was
removed by seas and lands from such a formidable adversary. Their mutual
designs or declarations of offensive war evaporated without effect;
but instead of opening a door to the conquest of Europe, Spain was
dissevered from the trunk of the monarchy, engaged in perpetual
hostility with the East, and inclined to peace and friendship with the
Christian sovereigns of Constantinople and France. The example of the
Ommiades was imitated by the real or fictitious progeny of Ali, the
Edri