 The Christian's answer comprises some six-sevenths of the text.The two participants are referred to by pseudonyms, according to the text to secure their safety.The Muslim participant, called "Abd-Allah ibn Ismail al-Hashimy" (which translates as "Servant of Allah, son of Ishmael, from the clan Banu Hashim), is described as a cousin of the unnamed Caliph, living in the Caliph's castle and being well versed in Christian theology.