Sa'd ibn Abi Waqqas · Medicine (Kitab Al-Tibb)

The Prophet (ﷺ) said: Allah has sent down both the disease and the cure, and He has appointed a cure for every disease, so treat yourselves medically, but use nothing unlawful.

I suffered from an illness. The Messenger of Allah (ﷺ) came to pay a visit to me. He put his hands between my nipples and I felt its coolness at my heart. He said: You are a man suffering from heart sickness. Go to al-Harith ibn Kaladah, brother of Thaqif. He is a man who gives medical treatment. He should take seven ajwah dates of Medina and grind them with their kernels, and then put them into your mouth.