al-Faḍl ibn ar-Rabīʿ

Al-Fadl ibn al-Rabi was a vizier, or chief minister, for the Abbasid caliph Harun al-Rashid. The office of vizier, which originated with the Abbasids, involved representing the caliph in all matters concerning the subjects. Al-Fadl ibn al-Rabi became vizier after the fall of the Barmakids, a powerful family that had previously held significant administrative control.12

The Barmakids, including Ja'far ibn Yahya, had largely governed the empire for over 16 years. However, Harun al-Rashid executed Ja'far in 803, confiscating the family's wealth. Historians suggest this may have been due to political divisions within the empire, with al-Fadl ibn al-Rabi favoring religious scholars and eastern provincial interests, contrasting with the Barmakids' support for civil servants and Persian interests. Al-Fadl ibn al-Rabi's tenure as vizier was marked by less efficiency than his predecessors, with the caliph's personal decisions carrying more weight.1