Medieval Christian polemic invented secret Muslim texts claiming Muhammad sought baptism for his followers.

Evidence

In the final letter, Abû Tâlib confesses that the Muslims have a secret book that reveals that Muhammad, on his deathbed, bade his disciples to receive baptism and to follow Christ, that this was the only way to be freed from sin. He concludes with a promise that he would come to Toledo, where both he and Samuel may receive the gift of baptism. — John V. Tolan, Saracens, 1275

Categorization

• CANDY: A wild claim: a fabricated ‘secret Muslim book’ in which Muhammad on his deathbed commands baptism — funny to retell as an example of medieval fake news.