How does Chapter 33 connect Sai Baba's practice of maintaining the Dhuni fire with his teachings on the nature of reality?

Chapter 33 draws a direct line between Sai Baba's physical actions and his spiritual teachings. It describes how Baba would collect firewood, sometimes by purchasing surplus bundles, and offer the dry logs into the sacred Dhuni fire that burned constantly in the Masjid. The Udi was the resulting ash from this fire. The chapter explains that this entire process was a practical demonstration of a deep philosophical concept. The Udi, created from the burnt wood, served as a tangible lesson that the entire physical world, including our own bodies, is transient and will ultimately be reduced to ash. This daily ritual powerfully illustrated the core teaching that Brahman is the only reality and the material universe is an illusion, a truth that devotees were to remember by accepting the Udi.