What are the main topics covered in Chapter 33 of the Sai Satcharitra regarding Sai Baba's teachings and practices?

Chapter 33 of the Sai Satcharitra primarily focuses on the glory and significance of the Udi (sacred ash) from Sai Baba's Dhuni. The chapter begins by paying homage to saints who are free from worldly attachments. It then transitions from the previous chapter's topic of the Guru's greatness to explain Baba's practice of maintaining the ever-burning Dhuni with firewood. The core teaching detailed in this chapter is the philosophical meaning behind giving Udi: it serves as a powerful reminder of the impermanence of the physical world and the body, urging devotees to remember that all is ultimately ash and that only Brahman is the eternal reality.