Can you tell me about the incident involving the two gentlemen from Goa and Sai Baba's unusual request for Dakshina?

The story of the two gentlemen from Goa is a curious one mentioned in Chapter 36. Two men came together for Sai Baba's darshan. Interestingly, Baba showed a distinct partiality in his request for Dakshina. He specifically asked one of the men for fifteen rupees, which the man gave joyfully. However, when the second gentleman tried to offer thirty-five rupees of his own volition, Sai Baba immediately rejected the offering. As Chapter 36 narrates, this unusual behavior surprised everyone present, including Madhavrao (Shama), who then questioned Baba about the reason for this apparent favoritism.