“…About his origin, preaching and reign, being faithful to his story and his writings, I explained quite briefly in order to expose the cruelty and malice of those people. In addition, may the interest of the reader turn to how the mendacious revelation of the evil man Muhammad shaped from his heart the pestilential venom, with which he tied the lustful souls almost as with knots, and so the smallest shall learn to However, the goal of this analysis is not to demonstrate that Juan Andrés was using the same sources as the above mentioned authors; what has been stressed about this preface is that the strongest rhetorical claim made by Juan Andrés is his special condition of being a "testigo de su nación", "a witness of their nation", the specific situation of a convert who is proselytizing his ex co-believers (Szpiech, 2012a(Szpiech, , 2012b. A similar claim is presented in the preface to the medieval (between 1085 and 1135) Liber denudationis siue ostensionis aut patefaciens (a.k.a Contrarietas alfolica): refrain from fables and to tie themselves with the cords of Adam and be dragged by the bonds of charity", Starczewska (2011).…”