What was Sai Baba's specific reaction and instruction when the parents of the boy with the bone-cyst pleaded for his help?

When the parents of the suffering boy arrived in Shirdi, they prostrated at Sai Baba's feet and pitifully narrated their child's condition. According to Chapter 34, Sai, who is described as the 'embodiment of compassion,' responded with immediate reassurance. He told the worried parents to become 'worry-free.' His specific instruction was simple and direct: 'Take this Udi and smear it on that wound.' He did not perform any complex ritual but simply gave them the sacred ash. Chapter 34 also notes that he gave them a powerful assurance, stating that those who seek shelter in the Masjid, his dwelling, shall never face downfall, thereby offering them not just a physical remedy but also profound spiritual comfort.