What is the primary subject of Chapter 33 in the Shri Sai Satcharita, and what is its significance?

Chapter 33 of the Shri Sai Satcharita primarily focuses on the glory and profound significance of the Udi, or sacred ash, that Sai Baba would distribute to His devotees. As detailed in the chapter, Baba maintained a constantly burning sacred fire, the Dhuni, and would give the resulting ash to devotees daily, especially when they were departing Shirdi. The chapter explains that the Udi serves as a powerful reminder of the impermanence of the physical world. It teaches that just as wood turns to ash, the human body will also become ash once its purpose is fulfilled, encouraging detachment and a focus on the eternal reality.