Can you explain the deeper spiritual significance of the Udi that Sai Baba distributed, as detailed in Chapter 33?

According to Chapter 33 of the Sai Satcharitra, the Udi distributed by Sai Baba carried a profound spiritual lesson about the nature of existence. The text explains that Baba used the Udi to teach that the entire visible universe is transient and ultimately amounts to ash. The Udi served as a powerful symbol for the impermanence of the physical body, which is described as being made of five elements and destined to become ash once its allotted experiences are over. Chapter 33 clarifies that through the Udi, Baba was imparting the wisdom that Brahman alone is the ultimate reality, while the universe we perceive is pervaded by Maya, or illusion. The ash was a constant reminder of this truth.