What is the primary purpose and content previewed at the beginning of Chapter 51 of the Sai Satcharitra?

Chapter 51 of the Sai Satcharitra begins with salutations and explains that listening to the sacred text purifies both the speaker and the listener, sanctifying their mouths and ears. The narrative is likened to sandalwood that soothes intense heat or rain that brings joy. As outlined in Chapter 51, the text transitions from the previous chapter's philosophical discussion on destroying ignorance to narrating marvelous accounts. Specifically, it promises to tell the story of how Kakasaheb was first established in Shirdi, which is unknown to many, and will also describe three other stories of devotees that will soothe the hearts of listeners.