Who were the visitors that came to see Sai Baba from Goa, and what was their experience with offering Dakshina?

The visitors mentioned in Chapter 36 were two gentlemen from Goa who came for Sai Baba's darshan. The text describes that both surrendered at his feet and were filled with joy. Their experience with offering Dakshina was quite unusual. Sai specifically asked for fifteen rupees from only one of the men, who gave it joyfully. However, when the second gentleman tried to offer thirty-five rupees on his own accord, Sai Baba immediately rejected the money, which surprised all the onlookers.