Based on Chapter 33, how does the Udi serve as a constant reminder of the impermanence of the physical world and the reality of Brahman?

Chapter 33 presents the Udi as a profound symbol for understanding existence. It teaches that Sai Baba used the sacred ash to impart a crucial lesson about impermanence. By giving the Vibhuti, Baba was reminding devotees to recognize that the entire visible universe is pervaded by Maya, or illusion, and is ultimately nothing but ash. The chapter explains that our own bodies are like wood, destined to become ash once our worldly experiences are complete. Therefore, as Chapter 33 reveals, the Udi serves as a tangible reminder to maintain the awareness that Brahman alone is the ultimate reality, while the material world is transient.