What does the story of Kaka's offering of grapes teach us about approaching a Guru?

The narrative in Chapter 35 provides a key lesson on the principle of offerings. It is stated that one should not go 'empty-handed to the door of God, a priest, or a Guru.' Following this, Kaka bought grapes to offer to Sai Baba. Notably, he could only find a variety with seeds, but he made the offering anyway. This simple act of sincerity set the stage for a profound leela. The grapes became the very medium through which Baba taught a lesson to the skeptical Boss Dharamsee, performing a miracle that transformed him. This shows that the sincerity and act of giving are paramount, and a Guru can use any humble offering as a catalyst for bestowing grace and profound spiritual lessons.