Tultusceptru de libro domni Metobii
Tultusceptru de libro domni Metobii is a short Latin biography of Muḥammad written in the 9th or 10th century in the Iberian Peninsula. It is a polemical text designed to show that Islam is a false religion and Muḥammad the unwitting dupe of the devil. It is known from a single copy in the Codex of Roda. Although the codex was compiled in the late 10th century, the Tultusceptru was added between about 1030 and 1060.