What is the relationship between giving Dakshina and receiving Udi from Sai Baba, and what do they represent together?

According to Chapter 33 of the Shri Sai Satcharita, there is a profound connection between giving Dakshina (offerings) and receiving Udi (sacred ash). The text explains that giving Dakshina at God's abode is the first step to cultivate a tendency toward renunciation. The Udi, or Vibhuti, is a symbol of discrimination. Chapter 33 states that the pairing of discrimination (represented by Udi) and renunciation (cultivated through Dakshina) is essential for spiritual progress. Without this powerful combination, the text warns, crossing the river of worldly existence becomes a very difficult task to accomplish.