Why did Sai Baba make Amir Shakkar, who was suffering from rheumatism, stay in the miserable Chavadi?

Despite Amir Shakkar's suffering from rheumatism, Sai Baba insisted he reside in the dilapidated Chavadi. This was a profound test of faith and obedience. As chapter 22 explains, Baba's firm words to Amir were to disregard the harsh conditions, whether it be wind, rain, or dampness. The instruction was to accept Baba's word as the ultimate medicine for his ailment. Although the place was physically dreadful, the proximity to Sai was considered the 'Great Prasad.' Thus, Amir's nine-month stay, though externally a hardship, was spiritually a period of accepting Baba's will and strengthening his internal faith, which was paramount over physical comfort.