What remedy did Sai Baba prescribe for Amir Shakkar's rheumatism?

When Amir Shakkar detailed his illness, which was rheumatism, and prayed for deliverance, Sai Baba's remedy was simply His word. As Chapter 22 explains, Baba instructed Amir to stay steadily in the Chavadi. Despite the place being damp and generally unsuitable for his condition, Baba's firm words were the medicine. Amir was told not to worry about the wind, rain, or dampness and to accept Baba's word as the ultimate remedy, which he did for nine months.