Who covered the most disciplines, Abū Sahl al-Qūhī or Al-Farabi?
Abū Sahl al-Qūhī Abū Sahl Wayjan ibn Rustam al-Qūhī (al-Kūhī ; Persian: ابوسهل بیژن کوهی‎ ‎ "Abusahl Bijan-e Koohi") was a Persian mathematician, physicist and astronomer. He was from Kuh (or Quh), an area in Tabaristan, Amol, and flourished in Baghdad in the 10th century. He is considered one of the greatest Muslim geometers, with many mathematical and astronomical writings ascribed to him.
Saud Al-Shuraim Saud ibn Ibrahim ibn Muhammad al-Shuraim (Arabic: سعود بن ابراهيم بن محمد الشريم،, born 19 January 1966) is one of the Imams and khateeb of the Grand Masjid (Masjid al-Haram) in Makkah. He holds a doctorate (Ph.D) and is a Professor of Sharia and Islamic studies at the Umm al-Qura University in Makkah, and was recently appointed as a Dean and "Specialist Professor in Fiqh" at the University.