What was the unique sign given to the devotee Balaram, and how did it relate to Sai Baba's passing?

The devotee Balaram Dhurandhar received a very profound and unique sign from Sai Baba. According to Chapter 51, Balaram had previously been cured of his chronic asthma. However, on one particular day, he experienced a sudden and surprising fit of coughing. It was later learned that this single fit of coughing occurred on the very day that Sai Baba gave up His body. This event was understood by everyone as a final sign from Baba to His devoted follower. The text states that after this sign, Balaram never had a cough again for the rest of his life.