Died on 994

Ali ibn al-‘Abbas al-Majusi;

(Persian: علی بن عباس مجوسی‎; died 982–994), also known as Masoudi, or Latinized as Haly Abbas, was a Persian physician and psychologist from the Islamic Golden Age, most famous for the Kitab al-Maliki or Complete Book of the Medical Art, his textbook on medicine and psychology.

He was born in Ahvaz, southwestern Persia, and studied under Shaikh Abu Maher Musa ibn Sayyār. He was considered one of the three greatest physicians of the Eastern Caliphate of his time, and became physician to Emir ‘Adud al-Daula Fana Khusraw of the Buwayhid dynasty, who ruled from 949 CE to 983 CE.



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