What was Sai Baba's specific response and instruction when the parents of the suffering child pleaded for his help?

When the worried parents from Malegaon arrived in Shirdi, they prostrated at Sai Baba's feet and, with choked voices, pleaded for his help. As Chapter 34 recounts, they described their exhaustion from seeing their son's wretched state and begged Sai to place his hand of protection on the child. Sai, described as the embodiment of compassion, immediately reassured them. He told them to be worry-free and gave them a simple but powerful instruction: "Take this Udi and smear it on that wound." He further promised that those who seek shelter in his Masjid would never face downfall.