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

Chapter 36 narrates an incident where two gentlemen from Goa came for Sai Baba's darshan. Both men surrendered at Baba's feet, but their interaction regarding dakshina was unusual. Sai Baba specifically asked one of the men for fifteen rupees, which the man gave with joy. However, when the second gentleman, unprompted, offered thirty-five rupees of his own volition, Baba immediately rejected the offering. This apparent partiality surprised everyone present, including Shama. The strangeness lay in Baba requesting and accepting a smaller sum while refusing a larger, freely given one, which seemed inconsistent and caused disappointment for the second man.