How did Sai Baba deal with a skeptical visitor named Boss Dharamsee?

Chapter 35 details a fascinating encounter between Sai Baba and a skeptical visitor, Boss Dharamsee. Dharamsee came with a "clinical scrutiny" and internally questioned Baba's abilities when offered grapes with seeds, a variety he disliked. Instead of a verbal lesson, Baba addressed his doubt directly through action. First, Baba gave him more of the grapes he disliked, then commanded him to eat them. When Dharamsee complied, the grapes miraculously became seedless. This experience, as the text notes, stunned Dharamsee's mind, caused his ego to drop away, and replaced his skepticism with deep love and faith for the saint.