One of William Saint Clair Tisdall's studies are included in ''The Origins of The Qur'an: Classic Essays on Islam’s Holy Book'' edited by [[Ibn Warraq]]. Chapter III include a section on ''Influence of Sabian and Jewish Ideas and Practices''.
While this work is dated and strongly reflects 19th century prejudices, much of the information is still valid, and deserves to be updated with more recent research. It proves a deep and faithful understanding with some of the more obscure elements of the Jewish tradition, and reinforces the notion that the early Jewish-Islamic relationship was may indeed have been based in some part of on a Noahide relationship, where the followers of the new faith studied not all, but a limited set , of the Jewish tradition. Perhaps based on a mistaken understanding of the prohibition to teach Torah to a non-Jew.
