I do not claim that in our religion...
I do not claim that in our religion, medicine has been learned from God, but I am speaking of the early stage of creation when there was no way for knowing ailment and cure other than by revelation. There must be a relation between the Lord of the universe and the medical herbs He has created. How could man realize that he could cure fever with pansy, or cold with honey which is described in the Holy Quran as a cure of people?
This is not possible save through the Real Physician that is the Wise God. It is He Who knows all relations and has put medical properties in the herbs and He knows the cure for every ailment. Asbagh ibn Nabatah has reported Imam Ali’s advice to his son, Imam Hassan (AS) as follows: “O my son! Shall I inform you of four things so that you will not be in need of any physician?” Imam Hassan (AS) said: “Yes, O Ameerul Mo’minin!” Imam Ali (AS) said: “Do not sit for eating except when you are hungry.
Do not rise up from eating unless you have an appetite for food. Chew the food well and go to the water closet before you go to bed.
If you follow these instructions, you will not be in need of any physician.” Then, the Imam (AS) said: “A Quranic verse has summed up the whole medicine: “Eat and drink and do not be extravagant…” [^6] In another narration, Imam Ali (AS) has said: “If anyone follows the above mentioned instructions, he will not get sick unless death comes to him.”[^7] The messenger of Allah (SAW) and the infallible Imams (AS) have been reported as saying: “One, who has many sorrows, his body too shall get sick.”[^8] They have also said: “Avoid drugs as long as your body can tolerate the pain, but when your body cannot tolerate pain any more, then look for the cure!”[^9] Imam Ali (AS) has been reported as saying: “Get along with your pain as long as it is with you (as long as it does not harm you).”[^10] The Imam (AS) has also said: “A Muslim does not seek cure unless his disease overcomes his health.”[^11] In relation to the curing of an ailment with something forbidden, Imam Baqir (AS) has been reported as saying: “Taqwa is necessary in all cases, but when the child of Adam is obliged (when there is no any way at all except unlawful), God makes lawful for him what is unlawful.”[^12] About the cure of fever, jaundice, blood pressure, insanity, epilepsy and other disease, there are many traditions in Bihar al-Anwar .