Abu Abd Allah Muhammad ibn Ishaq ibn Yasar al-Muttalibi (Arabic: أَبُو عَبْدُ ٱلله مُحَمَّد ٱبْن إِسْحَاق ٱبْن يَسَار ٱلْمُطَّلِبيّ, romanized: Abū ʿAbd Allāh Muḥammad ibn ʾIsḥāq ibn Yasār al-Muṭṭalibī; c. 704–767), known simply as Ibn Ishaq, was an 8th-century Muslim historian and hagiographer. Ibn Ishaq, also known by the title ṣāḥib al-sīra, collected oral traditions that formed the basis of an important biography of the Islamic prophet Muhammad. Source: Wikipedia (en)