What are the primary topics discussed in Chapter 33 of the Sai Satcharitra, particularly concerning Sai Baba's practices?

Chapter 33 of the Sai Satcharitra primarily focuses on the glory and significance of Udi (sacred ash). The chapter begins by praising the greatness of saints before transitioning to its main subject. It describes Sai Baba's daily practice of maintaining a sacred fire, or Dhuni, by continuously offering firewood into it. The resulting ash, or Udi, was then distributed to all devotees. As narrated in this chapter, Baba would give Udi to devotees in the mornings and evenings, and most notably, it served as a sign of his permission for them to leave Shirdi and return to their villages.