What is the general theme and content previewed in Chapter 51 of the Shri Sai Satcharita?

Chapter 51 of the Shri Sai Satcharita serves as both a reflection and a prelude. It begins by emphasizing the purifying power of listening to the Sai Charitra, stating that it sanctifies both the speaker and the listener. The chapter then transitions from the previous discussion on destroying ignorance, referencing a dialogue from the Bhagavad Gita between Shri Krishna and Arjuna. As detailed in Chapter 51, it then promises to narrate the marvelous and lesser-known account of how Kakasaheb was first established in Shirdi, exploring his bond of past lives (rinanubandh). Additionally, it previews the inclusion of three other devotee stories intended to soothe the hearts of the listeners.