We now come to the Qur'an itself. It seems evident that the Qur'an underwent a transformation during the 100 years following the prophet’s death. We have now uncovered coins with supposed Qur'anic writings on them which date from 685 AD, coined during the reign of ‘Abd al-Malik (Nevo 1994:110). Furthermore, the Dome of the Rock sanctuary built by ‘Abd al-Malik in Jerusalem in 691 AD "does attest to the existence, at the end of the seventh century, of materials immediately recognizable as Quranic." (Crone-Cook 1977:18) Yet, the quotations from the Qur'an on both the coins and the Dome of the Rock differ in details from that which we find in the Qur'an today (Cook 1983:74). Van Berchem and Grohmann, two etymologists who have done extensive research on the Dome of the Rock inscriptions, maintain that the inscriptions contain "variant verbal forms, extensive deviances, as well as omissions from the text which we have today." (Cook 1983:74; Crone-Cook 1977:167-168; see Van Berchem part two, vol.ii, nos.1927:215-217 and Grohmann's Arabic Papyri from Hirbet el-Mird, no.72 to delineate where these variances are)
If these inscriptions had been derived from the Qur'an, with the variants which they contain, then how could the Qur'an have been canonized prior to this time (late seventh century)? One can only conclude that there must have been an evolution in the transmission of the Qur'an through the years (if indeed they were originally taken from the Qur'an).
The sources also seem to suggest that the Qur'an was put together rather hurriedly. This is underlined by Dr. John Wansbrough who maintains that, "the book is strikingly lacking in overall structure, frequently obscure and inconsequential in both language and content, perfunctory in its linking of disparate materials, and given to the repetition of whole passages in variant versions. On this basis it can plausibly be argued that the book is the product of the belated and imperfect editing of materials from a plurality of traditions." (Hagarism, Crone-Cook 1977:18,167) Thus Crone and Cook believe that because of the imperfection of the editing, the emergence of the Qur'an must have been a sudden and late event (Crone-Cook 1977:18,167).
As to when that event took place we are not altogether sure, but we can make an educated guess. From the earlier discussion concerning the dating of the earliest manuscripts we can conclude that there was no Qur’anic documentation in existence in the mid-late seventh century. The earliest reference from outside Islamic literary traditions to the book called the "Qur'an" occurs in the mid-eighth century between an Arab and a monk of Bet Hale (Nau 1915:6f), but no-one knows whether it may have differed considerably in content from the Qur'an which we have today. Both Crone and Cook conclude that except for this small reference there is no indication of the existence of the Qur'an before the end of the seventh century (Crone-Cook 1977:18).
Crone and Cook in their research go on to maintain that it was under the governor Hajjaj of Iraq in 705 AD that we have a logical historical context in which the "Qur'an" (or a nascent body of literature which would later become the Qur’an) could have been compiled as Muhammad's scripture (Crone-Cook 1977:18). In an account attributed to Leo by Levond, the governor Hajjaj is shown to have collected all the old Hagarene writings and replaced them with others "according to his own taste, and disseminated them everywhere among [his] nation." (Jeffrey 1944:298) A reasonable conclusion is that it was during this period that the Qur'an began its evolution, possibly beginning to be written down, until it was finally canonized in the mid to late eighth century as the Qur'an which we now know.
From this brief survey we can conclude that the archaeological evidence for the historicity of the Qur’an proves to be the most damaging. Not only do the seventh and eighth century ruins and inscriptions from the area seem to contradict the notion that Muhammad canonized a direction of prayer during his lifetime, or that he had formulated a scripture known as the Qur’an, but the idea of his universal prophethood, that he was the final "seal" of all prophets is brought into question. This indeed is significant and troublesome.