Based on Chapter 33 of Sai Satcharitra, what were Sai Baba's daily practices involving the Dhuni and Udi, and why was it significant?

According to Chapter 33 of the Shri Sai Satcharita, Sai Baba's daily routine was deeply connected to the sacred fire (Dhuni) and the resulting sacred ash (Udi). Baba would purchase bundles of firewood and offer the logs into the Dhuni he kept constantly burning in the Masjid. The ash that remained, the Udi, was then distributed to his devotees. The chapter emphasizes this was a consistent daily practice, occurring in the mornings, afternoons, and evenings, ensuring no visitor left empty-handed. A particularly significant custom was giving Udi to devotees when they sought permission to leave Shirdi; receiving the Udi was seen as Baba's true blessing and consent for their departure, which was a practice known to all his followers.