There is some question as to whether Islam is a separate religion at all. It initially fulfilled a need among Arabs for a distinctive or special creed, and is forever identified with their language and their impressive later conquests, which, while not as striking as those of the young Alexander of Macedonia, certainly conveyed an idea of being backed by a divine will until they petered out at the fringes of the Balkans and the Mediterranean. But Islam when examined is not much more than a rather obvious and ill-arranged set of plagiarisms, helping itself from earlier books and traditions as occasion appeared to require. Thus, far from being "born in the clear light of history," as Ernest Renan so generously phrased it, Islam in its origins is just as shady and approximate as those from which it took its borrowings. It makes immense claims for itself, invokes prostrate submission or "surrender" as a maxim to its adherents, and demands deference and respect from nonbelievers into the bargain. There is nothing—absolutely nothing—in its teachings that can even begin to justify such arrogance and presumption.
The prophet died in the year 632 of our own approximate calendar. The first account of his life was set down a full hundred and twenty years later by Ibn Ishaq, whose original was lost and can only be consulted through its reworked form, authored by Ibn Hisham, who died in 834. Adding to this hearsay and obscurity, there is no agreed-upon account of how the Prophet's followers assembled the Koran, or of how his various sayings (some of them written down by secretaries) became codified. And this familiar problem is further complicated—even more than in the Christian case—by the matter of succession. Unlike Jesus, who apparently undertook to return to earth very soon and who (pace the absurd Dan Brown) left no known descendants, Muhammad was a general and a politician and—though unlike Alexander of Macedonia a prolific father—left no instruction as to who was to take up his mantle. Quarrels over the leadership began almost as soon as he died, and so Islam had its first major schism—between the Sunni and the Shia—before it had even established itself as a system. We need take no side in the schism, except to point out that one at least of the schools of interpretation must be quite mistaken. And the initial identification of Islam with an earthly caliphate, made up of disputatious contenders for the said mantle, marked it from the very beginning as man-made.
It is said by some Muslim authorities that during the first caliphate of Abu Bakr, immediately after Muhammad's death, concern arose that his orally transmitted words might be forgotten. So many Muslim soldiers had been killed in battle that the number who had the Koran safely lodged in their memories had become alarmingly small. It was therefore decided to assemble every living witness, together with "pieces of paper, stones, palm leaves, shoulder-blades, ribs and bits of leather" on which sayings had been scribbled, and give them to Zaid ibn Thabit, one of the Prophet's former secretaries, for an authoritative collation. Once this had been done, the believers had something like an authorized version.
If true, this would date the Koran to a time fairly close to Muhammad's own life. But we swiftly discover that there is no certainty or agreement about the truth of the story. Some say that it was Ali—the fourth and not the first caliph, and the founder of Shiism—who had the idea. Many others—the Sunni majority—assert that it was Caliph Uthman, who reigned from 644 to 656, who made the finalized decision. Told by one of his generals that soldiers from different provinces were fighting over discrepant accounts of the Koran, Uthman ordered Zaid ibn Thabit to bring together the various texts, unify them, and have them transcribed into one. When this task was complete, Uthman ordered standard copies to be sent to Kufa, Basra, Damascus, and elsewhere, with a master copy retained in Medina. Uthman thus played the canonical role that had been taken, in the standardization and purging and censorship of the Christian Bible, by Irenaeus and by Bishop Athanasius of Alexandria. The roll was called, and some texts were declared sacred and inerrant while others became "apocryphal." Outdoing Athanasius, Uthman ordered that all earlier and rival editions be destroyed.
Even supposing this version of events to be correct, which would mean that no chance existed for scholars ever to determine or even dispute what really happened in Muhammad's time, Uthman's attempt to abolish disagreement was a vain one. The written Arabic language has two features that make it difficult for an outsider to learn: it uses dots to distinguish consonants like "b" and "t," and in its original form it had no sign or symbol for short vowels, which could be rendered by various dashes or comma-type marks. Vastly different readings even of Uthman's version were enabled by these variations. Arabic script itself was not standardized until the later part of the ninth century, and in the meantime the undotted and oddly voweled Koran was generating wildly different explanations of itself, as it still does. This might not matter in the case of the Iliad, but remember that we are supposed to be talking about the unalterable (and final) word of god. There is obviously a connection between the sheer feebleness of this claim and the absolutely fanatical certainty with which it is advanced. To take one instance that can hardly be called negligible, the Arabic words written on the outside of the Dome of the Rock in Jerusalem are different from any version that appears in the Koran.
The situation is even more shaky and deplorable when we come to the hadith, or that vast orally generated secondary literature which supposedly conveys the sayings and actions of Muhammad, the tale of the Koran's compilation, and the sayings of "the companions of the Prophet." Each hadith, in order to be considered authentic, must be supported in turn by an isnad, or chain, of supposedly reliable witnesses. Many Muslims allow their attitude to everyday life to be determined by these anecdotes: regarding dogs as unclean, for example, on the sole ground that Muhammad is said to have done so.
As one might expect, the six authorized collections of hadith, which pile hearsay upon hearsay through the unwinding of the long spool of isnads ("A told B, who had it from C, who learned it from D"), were put together centuries after the events they purport to describe. One of the most famous of the six compilers, Bukhari, died 238 years after the death of Muhammad. Bukhari is deemed unusually reliable and honest by Muslims, and seems to have deserved his reputation in that, of the three hundred thousand attestations he accumulated in a lifetime devoted to the project, he ruled that two hundred thousand of them were entirely valueless and unsupported. Further exclusion of dubious traditions and questionable isnads reduced his grand total to ten thousand hadith. You are free to believe, if you so choose, that out of this formless mass of illiterate and half-remembered witnessing the pious Bukhari, more than two centuries later, managed to select only the pure and undefiled ones that would bear examination.
The likelihood that any of this humanly derived rhetoric is "inerrant," let alone "final," is conclusively disproved not just by its innumerable contradictions and incoherencies but by the famous episode of the Koran's alleged "satanic verses," out of which Salman Rushdie was later to make a literary project. On this much-discussed occasion, Muhammad was seeking to conciliate some leading Meccan poly-theists and in due course experienced a "revelation" that allowed them after all to continue worshipping some of the older local deities. It struck him later that this could not be right and that he must have inadvertently been "channeled" by the devil, who for some reason had briefly chosen to relax his habit of combating monotheists on their own ground. (Muhammad believed devoutly not just in the devil himself but in minor desert devils, or djinns, as well.) It was noticed even by some of his wives that the Prophet was capable of having a "revelation" that happened to suit his short-term needs, and he was sometimes teased about it. We are further told—on no authority that need be believed—that when he experienced revelation in public he would sometimes be gripped by pain and experience loud ringing in his ears. Beads of sweat would burst out on him, even on the chilliest of days. Some heartless Christian critics have suggested that he was an epileptic (though they fail to notice the same symptoms in the seizure experienced by Paul on the road to Damascus), but there is no need for us to speculate in this way. It is enough to rephrase David Hume's unavoidable question. Which is more likely—that a man should be used as a transmitter by god to deliver some already existing revelations, or that he should utter some already existing revelations and believe himself to be, or claim to be, ordered by god to do so? As for the pains and the noises in the head, or the sweat, one can only regret the seeming fact that direct communication with god is not an experience of calm, beauty, and lucidity.