Fowden, Elizabeth Key: The Lamp and the Wine Flask: Early Muslim Inteest in Christian Monasticism. Teoksessa: Islamic Crosspollinations: Interactions in the Medieval Middle East (toim. James Montgomery , Anna Akasoy & Peter E. Pormann, s. 8–13. E.J. Gibb Memorial Trust, 2007. Teoksen verkkoversio.
archive.org
Ibn Hisham: The Life of Muhammad. A translation of ishaq’s sirat rasul Allah with introduction and notes by A. Guillaume, s. 79–81. Oxford University Press, 1998. Teoksen verkkoversio. (englanniksi)
