What are the main philosophical concepts and miraculous events described in Chapter 22 of the Shri Sai Satcharitra?

Chapter 22 of the Shri Sai Satcharitra combines deep philosophical teachings with a specific miracle. It begins by describing the Sadguru as the embodiment of bliss and the destroyer of fear using the analogy of a rope being mistaken for a snake. The chapter explains that the Sadguru is both the creator of this illusion and the one who removes it. The text then highlights the joy devotees find at Baba's feet, likening the nail of his big toe to a crescent moon. Finally, it recounts the story of Das Ganu, who wanted to bathe at Prayag. As detailed in this chapter, Baba declared his own big toe to be Prayag, and when Das Ganu bowed, the holy waters of the Ganga and Yamuna miraculously flowed from it.