Peter Groff, Islamic philosophy A-Z, Edinburgh University Press, 2007, pp. 86-87, ISBN 978-0-7486-2927-5, OCLC 163587110. URL consultato il 7 maggio 2022.
«Of the 114 books he composed only a few fragments remain, preserved through the refutations of subsequent authors. Of these, the most important are The Scandal of the Mu'tazilites (Fadihat al-mu'tazila), which attempts to refute the major Mu'tazilite theologians, The Refutation (al-Damigh), which attacks the Qur'an, and The Book of the Diamond (Kitab al-zumurrud), which offers up a scathing critique of prophecy.»