Based on Chapter 33, explain the complete cycle from the procurement of firewood to the spiritual lesson imparted through the Udi.

Chapter 33 outlines a complete cycle that carries a deep spiritual teaching. The process began with Sai Baba buying bundles of firewood, which he would then offer into the sacred Dhuni fire. This continuous fire produced a great quantity of ash, which became the sacred Udi. The final step was Baba distributing this Udi to his devotees. The spiritual lesson embedded in this cycle, as the chapter clarifies, is a teaching on impermanence and reality. The wood represents the physical body and the visible universe, which, when its purpose is served, turns to ash. The Udi is thus a constant reminder to be aware that the material world is transient (Maya) and that only the ultimate reality, Brahman, is eternal.