Can you tell me the story of Boss Dharamsee and the miracle of the grapes?

Certainly. The story of Boss Dharamsee, a skeptical visitor with a 'clinical interest' in Sai Baba, is a powerful illustration of faith. As recounted in Chapter 35, a devotee named Kaka brought grapes with seeds as an offering. Baba offered these to Dharamsee, who disliked seeded grapes and was internally conflicted. He thought that if Baba were a true saint, he would know his preference. In response to this unspoken thought, Baba insisted he eat them. When Dharamsee finally obeyed, he was astonished to find the grapes had become seedless. This miracle shattered his ego, replacing his skepticism with love and devotion for Sai, proving that Baba knows the innermost thoughts of all.