According to the text, what will be narrated about Kakasaheb in Chapter 51, and what is the significance of his connection to Shirdi?

As introduced at the beginning of the chapter, Chapter 51 promises to narrate the marvelous account of how Kakasaheb was first established in Shirdi. The text highlights that while many of his stories are well-known, the specific circumstances of his initial arrival are not. This chapter aims to shed light on his 'rinanubandh,' or the bond from past lives, that drew him to Shirdi and fostered his firm relationship with Sai Baba. The narrative explains that meeting a Sadguru is a result of the merits from past lives and the grace of the Supreme Lord, which is the foundation of Kakasaheb's story.