Tārīkh Ibn Wāḍiḥ (Arabic: تآريخ ابن واضح, lit.
'History of Ibn Wāḍiḥ') or popularly Tārīkh al-Yaʿqūbī (Arabic: تآريخ اليعقوبي, lit.
[1] Like his contemporary Al-Dinawari, Ya'qubi's histories, unlike those of their predecessors, aimed to entertain as well as instruct; they are "literary" productions.
For the time of the patriarchs his source is now seen to be the Syriac work published by Karl Bezold as Die Schatzhöhle.
[1] The second part contains the Islamic history starting from the life of Mohammed, through the Caliphs, Imams and Monarchy down to 259/872 and is neither extreme nor unfair.