Who was the visitor to Shirdi who initially vowed not to bow his head or give Dakshina?

The visitor who made this vow was the friend of Kaka Mahajani, a man described in Chapter 35 as being 'averse to idol worship and a great devotee of the formless.' He traveled from Mumbai to Shirdi with his friend purely out of 'clinical curiosity.' He made his friend agree to two conditions before the trip: 'We will never bow our heads, nor provide any Dakshina.' However, upon hearing Baba's voice, he forgot his resolve and immediately bowed at Baba's feet.