How does Udi function as a metaphor for the physical world and our existence within it?

Udi serves as a potent metaphor for the transient nature of the physical world and human existence. Chapter 33 explicitly states, 'This worldly life is like Udi,' teaching that we should remember the impermanence of our bodies. The physical body is compared to 'water on a lotus leaf' that will inevitably fall, and the Udi is a gift that shows us the importance of renouncing pride in it. The entire world is likened to a 'game of Rangoli made of ash,' highlighting its temporary and illusory nature. Ultimately, Udi is described as simply being earth, the final destination for all name and form, through which truth can be realized.