Chapter 12 sets up a story about a visitor to Shirdi. Who was this person, and what was the context given for his arrival?

The latter part of Chapter 12 introduces a story intended to illustrate the greatness of the Guru. The person mentioned is a ritualistic, orthodox Agnihotri, a keeper of the sacred fire from the holy city of Nashik, with the surname 'Mule'. His arrival in Shirdi is described as a 'strange thing' that happened due to a stroke of good fortune and the strength of his past merits. The chapter emphasizes that without such merit, one cannot even stay in Shirdi for a moment. Though his initial intention was different, the coincidence of his visit led him to gain the benefit of Shirdi and see his own Guru.