Mohammed (569-632 A.D.) did not pretend to introduce a new religion; his professed object was merely to restore the primitive and only true faith, such as it had been in the days of the patriarchs; the fundamental idea of which was the unity of God. He made the revelations of the Old and New Testaments the basis of his preaching. He maintained the authority of the books of Moses, admitted the divine mission of Jesus, and he enrolled himself in the catalogue of inspired teachers. This doctrine was proclaimed in the memorable words, which for so many centuries constituted the war-cry of the Saracens,--_There is no God but God, and Mohammed is his prophet_. Mohammed preached no dogmas substantially new, but he adorned, amplified, and adapted to the ideas, prejudices, and inclinations of the Orientals, doctrines which were as old as the race. He enjoined the ablutions suited to the manners and necessities of hot climates. He ordained five daily prayers, that man might learn habitually to elevate his thoughts above the outward world. He instituted the festival of the Ramadan, and the pilgrimage to Mecca, and commanded that every man should bestow in alms the hundredth part of his possessions; observances which, for the most part, already existed in the established customs of the country.
The Koran (Reading), the sacred book of the Mohammedans, is, according to their belief, the revelation of God to their prophet Mohammed. It contains not only their religious belief, but their civil, military, and political code. It is divided into 114 chapters, and 1,666 verses. It is written in rhythmical prose, and its materials are borrowed from the Jewish and Christian scriptures, the legends of the Talmud, and the traditions and fables of the Arabian and Persian mythologies. Confusion of ideas, obscurity, and contradictions destroy the unity and even the interest of this work. The chapters are preposterously distributed, not according to their date or connection, but according to their length, beginning with the longest, and ending with the shortest; and thus the work becomes often the more unintelligible by its singular arrangement. But notwithstanding this, there is scarcely a volume in the Arabic language which contains passages breathing more sublime poetry, or more enchanting eloquence; and the Koran is so far important in the history of Arabian letters, that when the scattered leaves were collected by Abubeker, the successor of Mohammed (635 A.D.) and afterwards revised, in the thirtieth year of the Hegira, they fixed at once the classic language of the Arabs, and became their standard in style as well as in religion.