It has been related from Mirza Khaleel, may Allah have mercy on him, that he was not a physician, but he got the knowledge of medicine from a simple act of charity, as a gift of Allah to him.

He says that in his youth, he once visited the city of Qum which has the mouselum of the sister of Imam Reza (A.S.). During those days there was war between the countries of Iran and Russia, and there was lot of hunger due to bad and deteriorating conditions, especially when the cities of Iran were filled with prisoners from Russia.

He relates that his room was in one of the rooms of Dar-Ul-Shifaa, the top story of which constituted of a Madrassah and some rooms in which the visitors took abode.

Once Mirza Khaleel went to the market to buy some bread and after a lot of efforts he got some. On the way back to his room he saw a Russian woman who was carrying a baby and was pale with hunger. When she saw Mirza Khaleel with the loaf of bread she rebuked him, blaming him that the Muslims were not keeping the prisoners in a good state. Her words had a deep effect on Mirza Khaleel and he decided to give the bread as charity. He then went back to his room feeling deep pangs of hunger.

Shortly after, a stranger knocked on his door to ask him where he could find a doctor, since the stranger's mother was ill. Mirza Khaleel asked him about the symptoms of the ailment, and when the stranger described to him about the nature of his mother's sickness, Mirza Khaleel found himself automatically or involuntarily prescribing some medicines to the stranger.

When the stranger left to look for the medicines, Mirza Khaleel was really puzzled, since he knew that he didn't have any knowledge of medicine, but he was able to prescribe the medicine. Soon after, the stranger came to thank him and tell him that the medicine had cured the sick mother. Also, the stranger brought food and gold coins as an appreciation to him.

After some days the stranger brought to him several people suffering from various ailments, and Mirza Khaleel repeated the same act of prescribing the medicines to them, and they were all cured. This is when Mirza Khaleel realized that this was a gift he had got from the Almighty in return for the act of charity.

Mirza Khaleel became a renowned doctor without passing any exams except that of a spiritual nature. In addition he studied medicine and saw that he grasped it's principles with ease and reached great heights in this new career granted to him by Allah. (Jazaa al A'maal page 65)