I heard about a story where a scorpion sting was cured without real Udi. Can you explain what happened?

Yes, chapter 33 recounts a remarkable incident involving Narayanrao's friend who was stung by a scorpion. The friend was in severe agony, but Narayanrao could not find his container of Baba's Udi. In desperation, he turned to a picture of Sai Baba and prayed. He then noticed the ash from burnt incense sticks that had fallen at the bottom of the picture frame. Considering this ash to be Udi in that critical moment, he took a pinch, applied it to the sting while chanting Sai's name, and the pain subsided immediately, as if water flowing away. This demonstrated that the power was in the faith and Baba's grace, not just the physical substance.