What is the spiritual significance of the sacred fire, or Dhuni, that Sai Baba kept burning in Dwarkamai?

The sacred fire, or Dhuni, that Sai Baba kept constantly burning was central to his practice of creating Udi, or sacred ash. As detailed in Chapter 33, Baba would buy bundles of firewood and offer the dry logs into this Dhuni. The resulting ash, or Udi, held profound spiritual meaning. Its distribution was a daily ritual, and its significance was to remind devotees of the transient nature of existence. The Udi symbolizes that the entire visible universe, including our own bodies, is ultimately impermanent and will turn to ash, encouraging a focus on the eternal truth beyond worldly illusion.