I fell seriously ill, and the Messenger of Allah ﷺ came to visit me. He placed his hand between my breasts until I felt its coolness reach my heart. He said, "You are a man suffering from a heart ailment. Go to Harith bin Kaladah, the brother of Thakeef, for he is a man who practices medicine. Let him take seven Ajwah dates of Madinah, crush them along with their pits, and then administer them to you as a remedy."
حدثنا إسحق بن إسمعيل حدثنا سفيان عن ابن أبي نجيح عن مجاهد
مرضت مرضا أتاني رسول الله ﷺ يعودني فوضع يده بين ثديي حتى وجدت بردها على فؤادي فقال إنك رجل مفئود ائت الحارث بن كلدة أخا ثقيف فإنه رجل يتطبب فليأخذ سبع تمرات من عجوة المدينة فليجأهن بنواهن ثم ليلدك بهن
No references are available.
[Its chain of transmission is daif] Ibn Saad narrated it in Tabaqat, 3/146, 147, from the hadith of Sufyan bin Uyayna, through this route. Ibn Abu Najeeh and his student both used the ambiguous form "an" in transmission. There is also a daif route for it in Tabarani's Kabir, 6/50, and its chain is disconnected.