What is the primary theme of Chapter 34, and what story is introduced to illustrate it?

The primary theme of Chapter 34 is the continued exploration of the glory and healing power of Sai Baba's Udi. The chapter explicitly states it will describe Udi's qualities and characteristics further. To illustrate this, the text introduces a story based on experience, which it promises will feel wonderful to the listener. The narrative that begins is about a doctor from Malegaon whose young nephew was suffering from a terrible and incurable bone-cyst, also called Hadyavran. As Chapter 34 explains, after all medical remedies failed, the family heard about Sai Baba and decided to seek his help, setting the stage to demonstrate the Udi's power.