Muhammad ibn Zakariyya al-Razi (محمّد زکریاى رازى‬ Rhazes or Rasis) (854–925 CE) A Persian polymath, physician, chemist, philosopher and a theoretician in astronomy and grammar

Abstract

Razi was born in the city of Raynear Tehran, Iran. He was the founder of Baghdad hospital and he adopted what is now known as an evidence-based approach to find the best place to build up his hospital. He hung fresh meat in various places throughout the city and cleverly built the hospital where meat took longest to rot.Razi was a generous with a considerate attitude towards his patients and treated poor people without payment. Raziwrote a treatise Man La Yaḥḍuruhu al-Ṭabīb, or Who Has No Physician to Attend Him, with medical advice for poor people.