They translate books of science and attribute authorship to their coreligionists.

Joseph F. O'Callaghan, A History of Medieval Spain Cornell University Press, Ithaca, 1975, p. 313. quoted in C. K. Raju, Cultural Foundations of Mathematics, Vol. 10, Pt. 4: The Nature of Mathematical Proof and the Transmission of the Calculus from India to Europe (India: Pearson Longman, 2007)

Under the patronage of Archbishop Raimundo (1125-1152), an international community of scholars made Toledo the intellectual capital of Christian Spain and the principal link between Latin and Arabic civilizations. To some extent Seville served as the source for books that were translated, as Ibn Abdun complained : "Books of science ought not to be sold to Jews or Christians, except those that treat of their own religion. Indeed, they translate books of science and attribute authorship to their coreligionists or to their bishops, when they are the work of Muslims" (Seville "Musulmane, 206). | Ibn Abdun. Seville musulmane au début du Xll siècle. Tr. E. Lévi-Provençal. Paris, 1947