In this program...

In this program, he exposed some diseases and provided their remedies in addition to a comprehensive elucidation of food, such as fruits, edibles, and meat that are medically useful. Imam Ali (PBUH) also expressed some physical courses within his recommendations and advice, among which was that magnificent advice he had afforded to his son Imam al-Hassan (PBUH) in which he said: O son! May I offer four words after which you will no longer need medicine? Do not eat unless you are hungry.

Stop eating while you are still hungry. Chew food deliberately. Before sleeping, go to toilet. You will not need medicine. This advice is the highest physical recommendation that the modern medicine has declared. Overeating and inaccurate chewing bring about many diseases to the digestive system. Imam Al-Sadiq (PBUH) also discussed medicine and hygiene and delivered valuable lectures that revealed the most accurate affairs of these sciences.

He also discussed physiology, blood circulation and the microbes that affect diseases. Moreover, he reviewed the qualities of fruits, vegetables, meat, and the like. These physical and medical discoveries have been compiled in a book titled Tibbul-Imam Al-Sadiq, i.e., Medicine of Imam Al-Sadiq (PBUH). The Imam argued with the best physicians of his age and discussed the deepest and most accurate medical advances.

Those physicians submitted to his knowledge and confessed of the questions he had provided. Most of these dialogues are documented in the books dealing with the life of the Imam. We may consider that the best of these advances are those recorded in the book titled Amali Imam Al-Sadiq, i.e., Dictations of Imam Al-Sadiq (PBUH), in which chapters pertaining to physiology with its accurate questions and topics are recorded.

The most modern scientific laboratories and analytic devises and technology have not attained the topics that are discussed in that book. Naturally, these treatises contributed in the development of hygiene. As much as we conceive, the most splendid physical theses that are related to the Imams (PBUH) are those recorded in the book titled Ar-Risalatul Dhahabiya , i.e. The Golden Treatise of Imam Reza. It is also called Tibbul Imam Al-Reza , i.e., The Medicine of Imam Al-Reza (PBUH).

Imam Al-Reza (PBUH) wrote it in response to the demand of al-Mamun, the Abbasid caliph.