From wikipedia: Muḥammad ibn Isḥāq ibn Yasār ibn Khiyār (according to some sources, ibn Khabbār, or Kūmān, or Kūtān,[3] Arabic: محمد بن إسحاق بن يسار بن خيار, or simply ibn Isḥaq ابن إسحاق, meaning "the son of Isaac") (died 767, or 761[2]) was an Arab Muslim historian and hagiographer. Under the aegis of the 'Abbasid caliph Al-Mansur, Ibn Ishaq collected oral traditions that formed the basis of the most important biography of the Islamic prophet Muhammad.From wikipedia: Muḥammad ibn Isḥāq ibn Yasār ibn Khiyār (according to some sources, ibn Khabbār, or Kūmān, or Kūtān,[3] Arabic: محمد بن إسحاق بن يسار بن خيار, or simply ibn Isḥaq ابن إسحاق, meaning "the son of Isaac") (died 767, or 761[2]) was an Arab Muslim historian and hagiographer. Under the aegis of the 'Abbasid caliph Al-Mansur, Ibn Ishaq collected oral traditions that formed the basis of the most important biography of the Islamic prophet Muhammad....more