How does Chapter 33 connect the human body and the material world to the symbolism of Udi?

Chapter 33 draws a direct and powerful connection between the Udi (sacred ash), the human body, and the material world. The chapter explains that the Udi is a symbol meant to show that 'all this visible universe is nothing but ash.' It extends this metaphor to the human form, describing the body as 'wood made of five elements.' According to the text, this body exists only to experience its destined enjoyments and sorrows, and once those are exhausted, it becomes motionless and will clearly become 'just this ash.' By giving the Udi, Baba was imparting this lesson of impermanence, encouraging devotees to remember the transient nature of their own bodies and the world around them.