What was Amir Shakkar's ailment, and what was the unconventional treatment Sai Baba prescribed for him?

Amir Shakkar was afflicted with rheumatism and sought a remedy from Sai Baba. As described in Chapter 22, Baba's prescribed treatment was highly unconventional. He instructed Amir to stay steadily in the Chavadi. Baba's medicine was simply His word, and He told Amir not to be concerned with the conditions of the place, whether it was windy, rainy, or damp. Despite the externally harsh circumstances, Amir was to accept Baba's word as the true medicine and remain there with complete faith. This unique treatment regimen was ordained for a period of nine months.