Describe the strange incident involving the two gentlemen from Goa and their offerings to Sai Baba.

Chapter 36 of the Shri Sai Satcharitra recounts a peculiar event where two gentlemen from Goa came for Sai Baba's darshan. As described in the text, both men surrendered at Sai's feet, but Baba treated their offerings very differently. He specifically asked for fifteen rupees in dakshina from one of the men, who gave it with joy. However, when the second gentleman offered thirty-five rupees of his own volition, Sai Baba immediately rejected the offering. This apparent partiality caused great surprise among everyone present, including Madhavrao (Shama), who was prompted to question Sai Baba about his actions.