How is one supposed to use Sai Baba's Udi, and what is its symbolic significance according to chapter 33?

Chapter 33 describes Udi as symbolically potent, calling it the "ornament of Shankara (Shiva)," which signifies its divine and sacred nature. Regarding its use, the text outlines several methods. For spiritual purification, it is recommended to apply Udi daily after bathing and also to drink it mixed with Charanteerth. The chapter also shows it being placed inside a 'Tait' (amulet) and tied to the wrist with great reverence for protection. Consuming it is said to grant a full lifespan and remove sins. Maharaj himself is also shown directly applying Udi to a sick girl to heal her, demonstrating its use as a direct medium of grace and healing.