Can you explain the story of the grapes and the miracle that occurred with Boss Dharamsee?

Chapter 35 recounts the famous miracle of the grapes. A devotee named Kaka brought grapes with seeds as an offering, as seedless ones were unavailable. When Baba began distributing them, a skeptical visitor named Boss Dharamsee was reluctant to eat them. He disliked the variety and his doctor had forbidden eating unwashed fruit. He internally challenged Baba's omniscience. In response, Baba commanded him to eat the grapes he was holding. When Dharamsee obeyed, he was astonished to find they were completely seedless. The text states he thought, 'What a strange power! What is impossible for these saints?' This event demonstrated that whatever Sai gives becomes beneficial for the devotee.