Muhammad’s treaty with Christians was repeatedly edited and associated with Muslim friendship.

Evidence

Another feature of this type of literature was the popularity of Muhammad’s “Testamentum’ or treaty with the Christians; there were editions by J. G. Nissel, Gabriel Sionita, Nagy de Harsany and J. Fabricius. It was associated with practical ideas of friendship with Muslims, v. Pacifique. — Norman Daniel, Islam and the West, 2460