Describe the unusual remedy Sai Baba prescribed for Amir Shakkar's rheumatism and the principle behind its effectiveness.

As detailed in Chapter 22, when Amir Shakkar complained of his rheumatism, Sai Baba's remedy was not a physical medicine but a simple instruction: to stay steadily in the Chavadi. Baba's medicine was His word alone. Despite the place being plagued by wind, rain, and dampness—conditions externally contrary to healing rheumatism—Amir was told not to worry about them. The effectiveness of this treatment was rooted in faith. By accepting Baba's word as medicine and having certain internal faith, everything went well for Amir during his nine-month stay.