 Muhammad ibn Zakariya al-Razi, Hunayn ibn Ishaq, Ibn Sina (Avicenna), Ali ibn Isa al-Kahhal, Ibn al-Nafis, and Mir Mu’min Husayni Tunikabuni were all students that trained at Islamic hospitals in order to advance their knowledge in the medical field.These students were key players in the advancement of bimaristans because of contributions to Islamic Medicine from their observations and writings.Muhammad ibn Zakariya al-Razi was an Islam philosopher, physician, and alchemist, who trained well in the Greek science and is known for his "Comprehensive Book of Medicine."