How did the practice of Dakshina feature in the story of Kaka Mahajani's friend who vowed not to give any?

In the story of Kaka Mahajani's friend from chapter 35, Dakshina plays a crucial and ironic role. The friend, being a devotee of the formless, initially set a firm condition that he would not provide any Dakshina during his visit. However, Sai Baba addressed this resolve not by forcing him but by ignoring him in this regard. Baba twice requested Dakshina, but only from Kaka Mahajani—once in the morning and again in the afternoon for seventeen rupees. By pointedly asking nothing of the friend, Baba made him feel restless, highlighting the friend's own internal state and creating a desire to give, despite his initial vow.