But at first, the Arab empire did not have a compelling political theology to compete with those it supplanted and solidify its conquests. The earlie… - Robert Bruce Spencer

Around 1655, the Persian-language book Dabestan-e Mazaheb (School of Religions) was published in India, containing the texts of two chapters of the Qur’an, Sura al-Walaya (“The Guardian”) and Sura al-Nurayn (“The Two Lights”). These two chapters are clearly meant to bolster the Shi‘ite case. The guardian is Ali, and the two lights are obviously Muhammad and Ali. However, these two suras are almost certainly forgeries, and not only Sunnis, but Shi‘ites also consider them inauthentic.

In short, the lack of confirming detail in the historical record, the late development of biographical material about the Islamic prophet, the atmosphere of political and religious factionalism in which that material developed, and much more suggest that the Muhammad of Islamic tradition did not exist, or if he did, he was substantially different from how that tradition portrays him.

Islamic apologists in the West argue furiously that child marriage has nothing to do with Islam, and that the idea that Muhammad married a child is the invention of greasy Islamophobes. In reality, few things are more abundantly attested in Islamic law than the permissibility of child marriage.