Nafi ibn al-Harith

Nāfi‘ ibn Al-Ḥārith ibn Kaladah ath-Thaqafī () (died 13 AH / 634 – 635 CE)) was an Arab physician of the Banu Thaqif. He was recommended by Muhammad, and treated Sa`d ibn Abi Waqqas and Abu Bakr. When the latter was dying, he designated his illness as poisoning.
Life and career.
Trained in Yemen, he is reported to have written a book named "Dialog in Medicine". He was the chief physician and teacher at the Academy of Gundishapur in Persia.
He was half brother of Nufay ibn al-Harith (also known as Abu Bakra bin Kalada al-Thaqafi at-Thaifi).
Some historians maintain that he received his medical education at the Jundishapur medical school of Persia where he learnt the teachings of Aristotle and Galen.