What miraculous event involving fire is mentioned in Chapter 0 before Sai Baba came to Shirdi?

The introduction in Chapter 0 recounts a miraculous event that occurred while Maharaj (Sai Baba) was with a man named Chandbhai in the forest. After helping Chandbhai find his lost horse, Maharaj needed a fire to prepare his chillum. As there was no fire available in the forest, Maharaj simply struck his tongs on the ground. Miraculously, this act produced a fire, allowing him to finish his task. This demonstration of supernatural power happened before he traveled with the wedding procession to Shirdi.