Can you recount the incident involving two gentlemen from Goa and their offerings to Sai Baba?

Certainly. According to Chapter 36, two gentlemen from Goa came for Sai Baba's darshan. In a curious turn of events, Baba asked for and accepted a Dakshina of fifteen rupees from only one of them. When the second gentleman voluntarily offered a larger sum of thirty-five rupees, Sai Baba immediately rejected it. This apparent partiality surprised everyone, including Madhavrao (Shama), who was present. The story, as narrated in Chapter 36, serves as a prelude to Baba's deeper explanation about karmic debts, which he stated are inescapable even over eons.