What happened when Narayanrao's friend was stung by a scorpion and they couldn't find any Udi?

Chapter 33 details a remarkable incident involving Narayanrao's friend who was stung by a scorpion and was in severe agony. When they frantically searched for Baba's Udi to apply on the sting, they could not find it. In a moment of desperation and deep faith, Narayanrao prayed to Baba's picture and took the ash from burnt incense sticks that had fallen at the bottom of the picture frame. He considered this ash as Udi and applied it to the sting while muttering the Sai Nama mantra. Miraculously, the pain subsided instantly, demonstrating that the power was in the faith and devotion towards Sai, not just the substance itself.