According to the text, what specific, lesser-known story about Kakasaheb is promised in Chapter 51?

While acknowledging that Kakasaheb's stories are widely known, Chapter 51 promises to narrate a specific account that it claims is unknown to many. The text explicitly states, "Now, at the start of this new chapter, I shall narrate the marvelous account of how Kakasaheb was established in Shirdi." It goes on to explain that the chapter will detail the entire history of his "bond of past lives (rinanubandh) with Shirdi" and the development of his firm relationship with Sai. This focus on his initial arrival and the karmic reasons behind it is presented as the central, untold story to be revealed.