Can you explain the prophecy Sai Baba made about Tatya Patil and how it ultimately came true in an unexpected way?

Sai Baba made a specific prophecy regarding Tatya Patil's fate. As detailed in Chapter 42, he informed Ramchandra Dada Patil that Tatya's life was in danger, predicting he would "attain the eternal state" on Vijayadashami in the Shaka year 1840. Baba requested this be kept secret from Tatya to prevent him from losing heart. As the prophesied day neared, Tatyaba fell gravely ill, and it seemed the prediction would come true literally. However, a wonder occurred; Tatya's life-danger passed, and he survived. In what was perceived as a divine exchange, Sai Baba himself left his physical body at that exact time, leading followers to believe he gave his own body to save his devotee.