Can you tell me the story of the two gentlemen from Goa who visited Sai Baba?

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 unfolded. Baba specifically asked for a Dakshina, or monetary offering, of fifteen rupees from only one of the men, which that person gave with joy. However, when the second gentleman offered thirty-five rupees of his own volition, Baba immediately rejected the offering. As Chapter 36 recounts, this apparent partiality greatly surprised everyone present, including Madhavrao (Shama), who then questioned Sai about the reason for his actions.