The early conversion of Abdallah, and his skilful pen, had recommended him to the important office of transcribing the sheets of the Koran: he betrayed his trust, corrupted the text, derided the errors which he had made, and fled to Mecca to escape the justice, and expose the ignorance, of the apostle.

After the conquest of Mecca, he fell prostrate at the feet of Mahomet; his tears, and the entreaties of Othman, extorted a reluctant pardon; out the prophet declared that he had so long hesitated, to allow time for some zealous disciple to avenge his injury in the blood of the apostate.

With apparent fidelity and effective merit, he served the religion which it was no longer his interest to desert: his birth and talents gave him an honorable rank among the Koreish; and, in a nation of cavalry, Abdallah was renowned as the boldest and most dexterous horseman of Arabia.

At the head of forty thousand Moslems, he advanced from Egypt into the unknown countries of the West.

The sands of Barca might be impervious to a Roman legion but the Arabs were attended by their faithful camels; and the natives of the desert beheld without terror the familiar aspect of the soil and climate.