What miraculous event involving fire is described in Chapter 0, and what was its connection to Chandbhai?

The introduction in Chapter 0 recounts a miracle that occurred before Maharaj came to Shirdi. While with Chandbhai in a forest where there was no fire, Maharaj needed to light his chillum. To accomplish this, he simply struck his tongs on the ground, which miraculously produced fire for him to complete his task. This event, along with Maharaj finding Chandbhai's lost horse, deeply impressed Chandbhai, who then insisted Maharaj come and stay at his house, leading to the eventual journey to Shirdi.