What is the significance of Udi as described in the Shri Sai Satcharitra, and can you provide an example of its power?

The Shri Sai Satcharitra highlights the immense significance of Udi, presenting it as a powerful remedy for even the most terrible diseases. Chapter 34 explains that the greatness of Udi is a central theme, continuing from the previous chapter. It provides a specific example to illustrate its power: the story of a doctor's nephew from Malegaon who suffered from a bone-cyst, or Hadyavran. As detailed in this chapter, this ailment was so severe that numerous expert physicians, surgeons, and both native and foreign treatments failed to provide any relief. Ultimately, it was the application of Sai Baba's Udi that was prescribed as the cure for this seemingly incurable condition.