What is the significance of making an offering to a Guru, based on the story of the grapes?

The scriptures emphasize the principle that one should not approach a Guru empty-handed. In Chapter 35, this is put into practice when Kaka brings grapes to offer Sai Baba. The significance of this act goes beyond mere custom. The offering itself, even a simple one like grapes with seeds, becomes a tool for the Guru's work. In this case, the grapes became the central element in a profound lesson for the skeptical Boss Dharamsee. Baba used this offering to demonstrate his omniscience and power, turning the seeded grapes seedless for Dharamsee. This illustrates that the offering creates an opportunity for the Guru to impart a spiritual lesson, dissolve a devotee's ego, and foster a deeper connection, proving the offering's value lies not in the object but in the divine interaction it facilitates.