Chapter 12 introduces a story about a visitor to Shirdi. Who was this person and what was the context of his arrival?

Towards the end of the provided excerpts for Chapter 12, the narrative begins to set up a new story by introducing a specific visitor. This individual was an orthodox, ritualistic 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 hints that his original intention for the journey was different from the outcome, as the coincidence led him to gain the benefit of visiting Shirdi and unexpectedly seeing his own Guru. This story is presented to illustrate the greatness of the Guru.