What happened when two gentlemen from Goa came to visit Sai Baba for his darshan?

According to the account in Chapter 36, when two gentlemen from Goa came for Sai Baba's darshan, a peculiar event unfolded regarding dakshina. Both men surrendered at Sai's feet, but Baba's interaction with them differed. He specifically asked for fifteen rupees in dakshina from only one of the men, who gave it joyfully. When the second man, unprompted, offered a larger sum of thirty-five rupees, Sai Baba immediately rejected it. This apparent partiality surprised everyone present, including Madhavrao (Shama), who proceeded to ask Baba about the reason for his actions.