What was the difference between the grapes Boss Dharamsee received and the ones given to Tarkhad, and why is that detail so important?

The key difference, as recounted in Chapter 35, lies in the presence of seeds. Although both men received grapes from the same bunch, the ones Boss Dharamsee ate were miraculously seedless, while Tarkhad's grapes contained seeds. This distinction is critically important because it proves the miracle was not a property of the fruit itself but a specific, targeted act by Sai Baba for Dharamsee. It demonstrates Baba's omniscience—his ability to know the specific, unspoken dislike in Dharamsee's mind. By altering the grapes for Dharamsee alone, Baba provided undeniable proof that he knew his innermost thoughts, which is what ultimately dissolved Dharamsee's skepticism and ignited his devotion.