What was the 'medicine' Baba gave to Amir for his rheumatism, and what role did faith play in his treatment?

The medicine Baba prescribed for Amir Shakkar's rheumatism was simply His word. As recounted in Chapter 22, instead of a physical remedy, Baba commanded Amir to stay in the damp and windy Chavadi, conditions that would normally worsen rheumatism. Baba's firm words were, 'Wind, rain, or dampness, whether the place is high, low, or deep—do not weigh them.' Faith was the critical component of this treatment. The text states that while externally all conditions were contrary, Amir had 'certain faith' internally. He accepted Baba's word as the 'Great Prasad,' and because of this unwavering faith, everything went well for him during his nine-month stay.