Commentary, Edition and Translation
  • On Ethics. An Arabic Critical Edition and English Translation of Epistle 9 [of the Ikhwan al-Safaʾ] (Oxford: Oxford University Press, FORTHCOMING).
Book Chapters
  • 'The Missing Link?: MS 1040: An Important Copy of the Rasāʾil Ikhwān al-Ṣafāʾ in the Collection of The Institute of Ismaili Studies' in Texts, Scribes and Transmission: Manuscript Cultures of the Ismaili Communities and Beyond, ed. Wafi Momin (London: IB Tauris, 2022), pp. 81-136. 
  • Citational Exegesis of the Qur'an: Towards a Theoretical Framework for the Construction of Meaning in Classical Islamic Thought. The Case of the Epistles of the Pure Brethren (Rasāʾil Ikhwān al-Ṣafāʾ)', in The Construction of Belief: Reflections on the Thought of Mohammed Arkoun, ed. Abdou Filali-Ansary and Aziz Esmail (London: Saqi Books, 2012), pp. 168-193.
  • 'Introduction: A Biographical Sketch' [of Farhad Daftary] in Fortresses of the intellect, ed. Omar Alí-de-Unzaga (2011), pp. 1-32
  • The conversation between Moses and God (munāg āt Mūsā) in the Epistles of the Pure Brethren (Rasāʾil Ikhwān al-Ṣafāʾ) in Al-Kitâb: La sacralité du texte dans le monde de l'islam, ed. Daniel De Smet, Godefroid de Callataÿ and Jan Van Reeth, Acta Orientalia Belgica. Subsidia Analecta III (2004), pp. 371-387.
  • 'Ikhwān al-Ṣafāʾ' in Christian-Muslim Relations. A Bibliographical History. Volume 2 (900-1050) ed. David Thomas and Alex Mallett with Juan Pedro Monferrer Sala Johannes Pahlitzsch, Mark Swanson, Herman Teule and John Tolan (Leiden: Brill, 2010), pp. 306-311. 
Encyclopaedia Articles
  • "Brethren of Purity', in The Princeton Encyclopedia of Islamic Political Thought, ed. Patricia Crone, Madad Kadi, Devin J. Stewart, Muhammad Qasim Zaman, Mahan Mirza (Princeton: Princeton University Press, 2013), pp. 73-74.
Book Reviews
  • Review of Walid Saleh, The Classical Tafsīr Tradition: the Qurʾān Commentary of al-Thaʿlabī (d. 427/1035) (Leiden: E.J. Brill, 2004), Journal of Qur'anic Studies 8 (i), pp. 119-125. 
  • The Use of the Qurʹān in the Epistles of the Pure Brethren (Rasāʹil Ikhwān Al-Ṣafāʹ). University of Cambridge, 2005.