What specific details are given about the differing treatment of the two visitors from Goa regarding their monetary offerings?

Chapter 36 provides specific details about a curious event involving two gentlemen from Goa. Though both came together for darshan, Sai Baba treated their offerings very differently. He explicitly asked for Dakshina from only one of them, stating, "Give me fifteen rupees," which the person gladly gave. In contrast, when the second gentleman, unprompted, tried to offer thirty-five rupees, Sai immediately rejected it. This stark difference in acceptance and rejection of the offerings surprised everyone, including Madhavrao, who was present at that time and decided to ask Sai for the reason behind this partiality.