How does the act of giving Udi connect the concepts of impermanence and spiritual liberation?

The Udi acts as a crucial link between understanding worldly impermanence and achieving spiritual liberation. According to Chapter 33, the Udi tangibly represents the transient nature of our bodies, which, 'like water on a lotus leaf,' are destined to fall. By giving this ash, Baba encouraged devotees to renounce pride in their perishable forms. This realization of the world's illusory nature, described as a 'game of Rangoli made of ash,' is the first step. The text states that 'through clay alone truth is realized,' implying that accepting our material impermanence (symbolized by Udi) is the very path to crossing the 'river of worldly existence' and attaining spiritual truth.