What was Sai Baba's compassionate response and specific instruction to the worried parents from Malegaon?

In Chapter 34, Sai Baba is described as the embodiment of compassion in his response to the pleading parents. He first reassured them, telling them to be worry-free. The text includes his powerful promise that those who seek shelter in his Masjid will never face downfall. After calming their fears, Sai Baba gave them a simple and direct instruction for healing their son's seemingly incurable bone-cyst. He told them to take the Udi he provided and smear it directly on the wound, indicating that this sacred ash would succeed where all medical science had failed.