The words attributed to Simon of Tournai are : "Tres sunt qui Mundum, Sectis suis et Dogmatibus subjugarunt, Moïses, Jesus, et Mahometus: primo Moïses Judaicum Populum infatuavit; secundo Jesus Christus a suo nomine Christianos; tertio Mahometus Gentilem Populumm." Thomas of Cantimpré, Bonum universale de Apibus, Douai, Balthasar Beller, 1605, Livre II, Chap. XLV, Art. V; quoted by Prosper Marchand, Dictionnaire historique', tome premier, The Hague, 1758, p. 248-249, online.
Matthew Paris, Chronica Majora, French translation by A. Huillard-Bréholles, t. 2, Paris, 1840, p. 339-340, online.
See the article, signed P. R., on Simon de Tournai in Histoire littéraire de la France, t. 16, Paris, 1824, p. 390-391, online.