Who was a physician, Al-Kindi or Abu Yusuf?
Al-Kindi: Abu Yūsuf Yaʻqūb ibn ʼIsḥāq aṣ-Ṣabbāḥ al-Kindī (Arabic: أبو يوسف يعقوب بن إسحاق الصبّاح الكندي‎ ‎ , Latin: "Alkindus" ) (c. 801–873 AD), known as "the Philosopher of the Islamic empire (Abbasid Caliphate)", was a Arab Muslim philosopher, polymath, mathematician, physician and musician.
i don't know