According to Chapter 34, what was the role of faith versus the actual application of Udi in the healing process of the boy with the bone-cyst?

Chapter 34 presents a narrative where faith and the application of Udi are intrinsically linked. When the family from Malegaon approached Sai Baba, they had already exhausted all medical options for their son's bone-cyst. Sai Baba provided them with Udi and instructed them to apply it, but he coupled this instruction with a crucial condition: "Keep faith in God." He also reassured them by stating that his Masjid, or Dwaravati, was a place where troubles are resolved. The text mentions that after Baba cast a look of grace and they heard his words, the patient felt supreme happiness and the ailment began to find relief. This suggests that the healing was not merely a mechanical result of applying ash, but a holistic event catalyzed by the Guru's grace, the power of the sacred Udi, and the family's burgeoning faith.