How did Sai Baba use the request for Dakshina to address a devotee's inner state of mind?

Sai Baba masterfully used the request for Dakshina as a tool to address a devotee's inner state, as highlighted in Chapter 35. When Kaka Mahajani's skeptical friend visited, Baba pointedly asked Kaka for Dakshina but not the friend. This caused the friend to feel restless and question why he was excluded. Baba's response was direct: "In your mind, there was no intent to give; Therefore, I did not ask you." By not asking, Baba mirrored the friend's own internal resistance back to him. This prompted the friend to self-reflect, and upon being given the choice—"if you wish to give in your heart, then give"—he eagerly made an offering, thereby overcoming his initial skepticism and taking a step towards dissolving the "oilman's wall" of duality that Baba mentioned.