The Vita Machometi is a Latin biography of Muḥammad written by a certain Adelphus in the early to mid-12th century.
[2] This includes that he had heard the Muslim call to prayer and had conversed with a Greek about Islam while staying in Antioch on a return trip from Jerusalem.
[4] While out hunting one day, Muḥammad is attacked and eaten by pigs, which is why Muslims refuse to eat pork.
[10] Like Guibert of Nogent, Adelphus portrays Islam as the latest in a succession of Christian heresies arising in the east, like monophysitism and Nestorianism.
It is known from a single manuscript of the mid-12th century, now in the Municipal Library of Trier [de] and catalogued as MS 1897 (18).