Why was everyone surprised when two men from Goa offered Dakshina to Sai Baba?

The surprise surrounding the Dakshina offering from the two gentlemen from Goa, as detailed in Chapter 36, stemmed from Sai Baba's seemingly partial behavior. While both men came for his darshan together, Baba only asked for Dakshina from one of them, requesting a specific amount of fifteen rupees. The other gentleman, unprompted, offered thirty-five rupees, a larger sum, but Baba immediately rejected it. This selective acceptance and rejection of offerings was highly unusual and appeared contradictory, causing great surprise among all onlookers, including his close devotee Madhavrao (Shama), who felt compelled to ask for an explanation as noted in Chapter 36.