Abstract
The traditional argument of Muslim theologians that aims to verify the claims of a true prophet and distinguish him from an impostor is based on the acceptance of miracles performed in history and testified through an uninterrupted chain of tradition . A second argument that equally involves transmission through tawātur is based on the prophet’s virtuous and impeccable character establishing the trustworthiness of the prophet. These are, for instance, the types of proofs mentioned by the Baghdadian Mu‘tazilī al-Gˇāhiz in his monograph Huˇgaˇg al-nubuwwa . For theologians of the Aš‘arite school this approach to the verification of prophecy posed a problem. According to classical Aš‘arite theology, good is what God commands and bad is what he forbids. If God chooses prophets to reveal knowledge about what is right and what is wrong, and thus also reveal knowledge about how to live a virtuous life, how can those whom the prophets call upon know that the prophets have a virtuous character before they even know the criteria for virtue? Early Aš‘arite theologians indeed accepted that all prophets had a most virtuous character. This fact, however, became apparent only after their message gained acceptance within their community and it cannot be regarded as a viable verification of the claim of a prophet to those he calls upon. Al-Aš‘arī , for instance, is said to have accepted a number of indications that allow humans to distinguish a prophet from ordinary people. He does not mention the claimbased on the impeccable moral conduct of prophets. In fact, hestresses that in order to distinguish a true prophet from otherpeople who are close to God , but who have nomessage to reveal, one should put oneÕs trust only in theoccurrence of true prophetic miracles