What is the primary message conveyed in Chapter 34 of the Shri Sai Satcharitra?

Chapter 34 of the Shri Sai Satcharitra continues to elaborate on the glory and healing power of Sai Baba's Udi, or sacred ash. The chapter's central message is that faith in the Guru, combined with the application of Udi, can cure even the most terrible and incurable diseases that modern medicine cannot. This is illustrated through the story of a doctor's nephew from Malegaon who suffered from a severe bone-cyst. As the introduction of Chapter 34 states, the narration describes Udi's qualities and characteristics, showing how it completely uprooted the pain of an ailment that no other remedy could fix, thereby demonstrating its profound spiritual and physical healing majesty.