Nafi ibn al-Harith( - 634, 35 )
Nafi ibn al-Harith bin Kalada al-Thaqafi ) was an Arab physician of the Banu Thaqif and was recommended by Muhammad and treated Sa`d ibn Abi Waqqas, and when Abu Bakr was dying, he designated his illness as poisoning.
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 .
Some historians maintain that he received his medical education at the Jundishapur medical school where he learnt the teachings of Aristotle and Galen.