What is the philosophical significance of the Udi that Sai Baba distributed, according to Chapter 33?

According to Chapter 33 of the Shri Sai Satcharita, the Udi, or sacred ash, that Baba distributed carries a profound philosophical message. The text explains that Baba intended to convey the impermanence of the physical world. The Udi serves as a potent reminder that the entire visible universe is as transient as ash. Furthermore, it symbolizes that the human body, made of five elements, is like wood that will eventually turn to ash once its destined experiences are exhausted. Chapter 33 explicitly states that through the Udi, Baba teaches that while the universe is pervaded by Maya (illusion), only Brahman is the ultimate reality, and this Vibhuti is a sign of this truth.