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.
Mohammad Yousaf Abu al-Farah Tartusi Mohammad Yousaf Abu al-Farah Tartusi(Arabic: محمد یوسف ابوالفرح طرطوسی‎ ‎ ) , Yousaf Abu al-Farrah Tartoosi or Abul Farah Tartusi was a popular Muslim Sufi saint. He is one of the common ancestors of the Sufi Tariqahs which form an unbroken silsilah (chain) to the Islamic prophet Mohammad.