Medieval Muslim scholars were challenged with squaring their conceptions of prophetic infallibility with reports that Muhammad disobeyed revelatory commands from God. The manner in which they rehabilitated the prophetic image in these cases had corresponding repercussions in the fields of jurisprudence, theology, and legal theory. The present article uses the case of Q. 8:67 to demonstrate the intertwined nature of the Islamic sciences and the stakes involved when delimiting the prophetic ability to err and/or disobey God.