Based on the incident with Kaka's friend, what was the significance of giving Dakshina to Sai Baba?

The incident involving Kaka Mahajani's friend, detailed in Chapter 35, reveals that giving Dakshina to Sai Baba was far more than a simple monetary offering; it was a significant act of faith and surrender. The friend, who initially mocked devotees for giving, was not asked for Dakshina because, as Baba stated, he had "no intent to give." However, after a profound experience where Baba's voice reminded him of his father, his heart changed. When he voluntarily asked to give and then paid the seventeen rupees, it symbolized the melting of his doubt and the surrender of his ego. Baba's subsequent advice to tear down the "oilman's wall" suggests that the act of giving was a step towards breaking the duality between the devotee and the Guru.