What is the main topic of Chapter 33 in the Shri Sai Satcharita, and what was Sai Baba's daily practice concerning it?

Chapter 33 of the Shri Sai Satcharita primarily focuses on the glory and significance of Udi, or sacred ash. According to the text, Sai Baba maintained a constant sacred fire, the Dhuni, in the Masjid. He would use firewood, often bought from those with a surplus, to fuel this fire. The resulting ash, or Udi, was then distributed to devotees. As detailed in this chapter, it was a daily practice for Baba to give Udi to devotees in the mornings, afternoons, and evenings, and especially as a sign of permission when they were leaving Shirdi to return to their villages.