How did Sai Baba's interaction with Kaka Mahajani's friend challenge the friend's vow not to bow or give Dakshina?

The encounter profoundly challenged the friend's vows through a deeply personal miracle. Chapter 35 recounts that the friend, who was prone to doubts, had firmly decided not to bow or offer money. When he set foot in the mosque, Baba called out, "Why have you come in this manner?" The power was not in the words themselves, but in the tone, which was a perfect imitation of the friend's late father. This auditory phenomenon was so startling that the friend's intellectual and spiritual stance collapsed. He forgot his vow and bowed, as noted in the text. Regarding the second vow, Baba cleverly did not ask the friend for Dakshina at all, only asking Kaka Mahajani, which made the friend feel restless, prompting internal reflection.