Shi‘ites believe that the prophets are free from all sin—major or minor, intentional or unintentional, before or after their assignment, in matters relevant to their mission or not—and that the prophet's commands and prohibitions are those of Allah. Shia also believe that the prophets have complete knowledge of Allah's will given to them by the First Infallible, Muhammad, which at all times causes them to act perfectly in religious matters; and that "as a result of the presence of Muhammadan Light, the Imam possesses the quality of inerrancy (Ismah), in spiritual and religious matters...and this Light is the source of knowledge and revelation." According to Twelver Shia, The Fourteen Infallibles ( "Ma‘ṣūmūn"), who are "divinely bestowed free from error and sin", include Muhammad, his daughter Fatimah, and the Twelve Imams, with Fatimah's infallibility being derived from her being a link between Prophethood and "Imamah", the two institutions characterized by infallibility, as well as her association with the Imams and their attributes in numerous "ahadith".