What were the financial dealings between Balasaheb Deo and Sai Baba during Deo's visit to Shirdi?

During his visit to Shirdi, Balasaheb Deo had a peculiar financial interaction with Sai Baba that is recounted in Chapter 41. Upon going for Darshan, Deo offered one rupee. Baba immediately responded by telling him, 'Why only one? Bring twenty.' Deo complied and gave the twenty rupees. The very next day, when Deo went to the mosque for Darshan again, Sai Baba once more requested twenty rupees from him. The text notes that Deo gave this second sum 'with joy and satisfaction,' indicating his complete willingness to fulfill Baba's requests without question, even as he was grappling with his personal spiritual vow concerning the Dnyaneshwari.