There is an interesting incident in the life of Sri Shirdi Sai Baba Once Sai Baba had heart disease. He used to cure all the diseases of the devotees. But now he himself was suffering. Who could cure him? Sai Baba himself narrated as to how his heart disease was cured.

Baba: I had heart disease. I kept Vishnu Sahasranama close to my chest. Hari (meaning Lord Vishnu) descended from it. I was cured. (Incident no 198: Sri Sai Baba