Kitab al-Hawi or Al-Hawi or Kitāb al-Ḥāwī fī al-ṭibb translated as The Comprehensive Book on Medicine is an extensive medical encyclopedia authored by the Persian polymath Abu Bakr Muhammad ibn Zakariya al-Razi (865–925), commonly known in the West as Rhazes in the 10th century.

[1] It was first translated into Latin in 1279 under the title Continens by Faraj ben Salim, a physician of Sicilian-Jewish origin employed by Charles of Anjou.

[2] The oldest partial remaining copy of this work belongs to the National Library of Medicine in Bethesda, Maryland dated 1094 CE.

[4] The book covers a wide range of medical topics, including theoretical and practical medicine.

[5] The Kitab al-Hawi had a profound influence on the development of medical knowledge in the medieval Islamic world and subsequently in Europe.