What are the main topics and philosophical points introduced in Chapter 51 of the Sai Satcharitra?

Chapter 51 begins with invocations comparing the Guru's grace to sandalwood soothing heat and clouds showering rain. It then discusses a key philosophical point by referencing the Bhagavad Gita, explaining that the true goal of spiritual discourse is the destruction of delusion (moha), or ignorance, just as Arjuna confirmed to Krishna. As detailed in Chapter 51, the text then sets the stage for the main narratives, promising to tell the marvelous account of how Kakasaheb was established in Shirdi, exploring his bond from past lives (rinanubandh). It also states that it will share three additional stories of devotees to soothe the listeners' hearts.