What is the deep philosophical and spiritual significance of the Udi that Sai Baba distributed, according to the teachings in Chapter 33?

Chapter 33 of the Sai Satcharitra explains the profound spiritual symbolism behind Sai Baba's Udi. Baba intended the Udi to be a powerful reminder of the impermanence of the material world. The chapter states that the ash signifies that the entire visible universe is transient and ultimately nothing but ash. It serves as a metaphor for the human body, described as being made of five elements, which will also become ash once its destined experiences are exhausted. Through this act, Baba taught the importance of realizing that Brahman alone is the ultimate reality, while the universe is pervaded by Maya (illusion). The Udi is a tangible sign of this truth, encouraging detachment from worldly distinctions.