What is the significance of making an offering to a Guru, based on the events in Shirdi?

The Satcharitra emphasizes the importance of this tradition in the narrative from Chapter 35. The text explicitly mentions, 'It is not good to go empty-handed to the door of God, a priest, or a Guru.' In adherence to this principle, Kaka bought grapes to present to Sai Baba upon their arrival in Shirdi. This seemingly simple act of devotion became the catalyst for a profound leela. Baba used this very offering of grapes to perform a miracle for the skeptical Boss Dharamsee. The offering, therefore, was not merely a gift but became the instrument through which Baba revealed his omniscience and transformed a doubter into a devotee, highlighting how a small act of respect can open the door to immense grace.