Based on Chapter 33, what is the deeper spiritual significance of the Udi that Sai Baba gave to his devotees?

Chapter 33 explains the profound spiritual meaning behind Sai Baba's distribution of Udi. The sacred ash serves as a powerful symbol and a teaching in itself. The chapter clarifies that the Udi is meant to show that the entire visible universe is transient and ultimately as ephemeral as ash. Baba used it to convey that our own bodies, described as being made of five elements, will also become ash once their destined experiences are exhausted. As stated in Chapter 33, the Udi is a sign of the ultimate truth that Brahman alone is real while the cosmos is an illusion (Maya), and receiving it is an encouragement to remember this distinction.