What are the primary topics and stories introduced at the beginning of Chapter 51 of the Shri Sai Satcharita?

The introduction to Chapter 51 of the Shri Sai Satcharita outlines several key themes. After the initial salutations, it recaps the previous chapter's discussion on destroying ignorance by referencing the Bhagavad Gita. The text then announces that this new chapter will narrate the marvelous account of how Kakasaheb came to be established in Shirdi, explaining his bond from past lives, or 'rinanubandh'. As stated in Chapter 51, it also promises to describe three stories of three different devotees, which are intended to soothe the hearts of the listeners and illustrate how meeting a Sadguru is a result of merits from past lives.