What was the significance of the grapes being seedless for Dharamsee but not for the other devotee, Tarkhad?

This contrast is crucial to understanding the nature of the miracle described in Chapter 35. The miracle was a personal and targeted communication for Boss Dharamsee. He was the one wrestling with skepticism, dislike for the grapes, and internal judgment of the saint. When he ate the grapes, he 'found they were all seedless and was greatly surprised.' His subsequent question to the other devotee, Babasaheb Tarkhad, who confirmed his own grapes had seeds, served to eliminate any possibility of coincidence. It proved to Dharamsee that Baba knew the 'intent of my mind' and had performed the miracle specifically for him. This realization is what shattered his ego and made his 'love for Sai' arise.