What was Tarkhad's role in the story of Boss Dharamsee's first visit?

In the narrative from Chapter 35, the devotee Tarkhad played two important roles during Boss Dharamsee's visit. Initially, when the curious Dharamsee asked why people gathered there, Tarkhad provided the context, explaining they came for "Darshan" and that devotees' desires could find fulfillment. More significantly, Tarkhad served as a crucial witness after the miracle. To confirm his extraordinary experience, Dharamsee asked Tarkhad about the grapes he had received from the same distribution. Tarkhad replied that his grapes did have seeds. This confirmation removed any doubt that the event was a coincidence and solidified the miraculous nature of what had happened, leaving Dharamsee "extremely surprised" and cementing his newfound faith.