Who was the Agnihotri from Nashik mentioned in Chapter 12, and why is his story introduced?

Chapter 12 introduces the story of a ritualistic and orthodox Agnihotri, a keeper of the sacred fire, from the holy city of Nashik. His surname was Mule. The chapter explains that he came to Shirdi due to the strength of his past merits, as no one can stay there without such a foundation. His story is presented as a "very delightful story" intended to illustrate the greatness of the Guru. The narrative is significant because it hints that his original intention for visiting was different from the eventual outcome, which was a rare meeting with Sai. This serves as an example of how a Guru's grace and destiny guide a devotee, leading to unforeseen spiritual benefits.