Can you tell me what happened when the two gentlemen from Goa visited Sai Baba, as mentioned in the Satcharitra?

Certainly. According to Chapter 36 of the Shri Sai Satcharitra, two gentlemen from Goa came together for Sai Baba's darshan. After they both surrendered at his feet, a curious event occurred. Baba asked for a Dakshina of fifteen rupees from only one of the men, who gave it joyfully. However, when the second gentleman tried to offer thirty-five rupees of his own accord, Baba immediately rejected the offering. This apparent partiality surprised everyone present, including Madhavrao, also known as Shama, who then questioned Baba about his actions.