What is the central narrative of Chapter 34, and what message does it convey about Sai Baba's Udi?

Chapter 34 of the Shri Sai Satcharitra continues the discussion on the glorious power of Udi. The central narrative focuses on a doctor from Malegaon whose nephew suffered from a severe bone-cyst, or Hadyavran, which proved incurable by any available medical treatments, including surgery. As described in the chapter, after all conventional remedies failed, the family heard about the great saint Sai Baba in Shirdi. They traveled to seek his help as a last resort. The core message, illustrated by this story, is the immense and miraculous healing power of Sai's Udi, emphasizing that faith in the Guru can overcome ailments that even expert physicians cannot cure. Sai Baba's compassionate response and the gift of Udi highlight its divine properties, as explained throughout Chapter 34.