Chapter 12 introduces a story about a man from Nashik. Who was he and what is the purpose of his story?

The story introduced at the end of Chapter 12 is about a ritualistic and orthodox Agnihotri (a keeper of the sacred fire) from Nashik, with the surname 'Mule'. According to the text, he came to Shirdi due to the strength of his past merits, as no one can stay there otherwise. The chapter presents his account as a "very delightful story" that serves a specific purpose: to illustrate the greatness of the Guru and to showcase the love a Guru has for his devotees. It's implied that though Mule's initial intention for his journey was different, a fortunate coincidence led him to Shirdi and the sight of his own Guru, demonstrating a higher spiritual plan at work.