Can you provide a summary of the main themes and events described in Chapter 22 of the Shri Sai Satcharitra?

Chapter 22 begins with invocations and salutations to the Sadguru, describing him as the embodiment of bliss and the destroyer of worldly fears. The chapter explores the nature of illusion and reality using the metaphor of a snake and a rope, where the Guru is the one who both creates and removes the illusion. It emphasizes the importance of the Guru's form for meditation, stating that his feet are the only path to happiness. As detailed in Chapter 22, this culminates in the story of Das Ganu, who wished to visit Prayag for a holy bath. Baba instructed him that his big toe was Prayag, and when Das Ganu bowed, the holy waters of the Ganga and Yamuna manifested from Baba's toe.