Muḥammad ibn Isḥāq ibn Yasār ibn Khiyār (Arabic pronunciation: [ʔisħaːq]; according to some sources, ibn Khabbār, or Kūmān, or Kūtān,[5] Arabic: محمد بن إسحاق بن يسار بن خيار, or simply ibn Isḥaq, ابن إسحاق, meaning “the son of Isaac”; died 767)[2] was an 8th-century Muslim historian and hagiographer. Ibn Ishaq collected oral traditions that formed the basis of an important biography of the Islamic prophet Muhammad.