Why did Kaka Mahajani's friend become restless about Dakshina, even though he originally planned not to give any?

Initially, Kaka Mahajani's friend was firm in his resolve not to offer any Dakshina to Sai Baba. However, his perspective changed dramatically during his visit. Chapter 35 recounts that after the friend broke his first vow and bowed to Baba, Baba twice asked Kaka Mahajani for Dakshina but pointedly ignored the friend. First, Baba asked Kaka for an unspecified amount, and later, for a specific seventeen rupees. By being deliberately excluded from the act of giving, the friend, who had initially wanted no part in it, began to feel restless. This suggests that Baba's method stirred a longing within him to participate, teaching him a subtle lesson about ego and the desire to give.