Who covered the most disciplines, Abū Sahl al-Qūhī or Al-Farabi?
Al-Farabi Al-Farabi ( ; Persian: ابو نصر محمد بن محمد فارابي‎ ‎ "Abū Naṣr Muḥammad ibn Muḥammad Al Fārābī ";, known in the West as Alpharabius (c. 872 in Fārāb – between 14 December, 950 and 12 January, 951 in Damascus), was a renowned philosopher and jurist who wrote in the fields of political philosophy, metaphysics, ethics and logic. He was also a scientist, cosmologist, mathematician and music scholar.
Istakhri Abu Ishaq Ibrahim ibn Muhammad al-Farisi al Istakhri (also known as Estakhri, Persian: استخری‎ ‎ , i.e. from the Iranian city of Estakhr, b. - d. 957 AD [346AH]) was a Persian medieval geographer in medieval Islam and traveler of the 10th century.