What specific promises did Kaka Mahajani's friend make before going to Shirdi, and what happened to those promises?

According to Chapter 35, Kaka Mahajani's friend, who was a devotee of the formless and prone to doubts, set two specific conditions before agreeing to visit Shirdi. He told Kaka, "We will go to Shirdi and only take the Darshan of the saint; We will never bow our heads, nor provide any Dakshina." He stated that he would only come if his friend agreed to these terms. However, upon meeting Sai Baba, the friend's resolve was immediately shattered. When Baba spoke to him in a tone that perfectly imitated his late father's voice, the friend was so moved that he forgot his promise and spontaneously bowed his head at Baba's feet.