In the story of the man averse to idol worship, who was Kaka Mahajani?

In the narrative from Chapter 35, Kaka Mahajani was the devout friend of the skeptical man. The text describes Kaka Mahajani as someone whose 'feelings toward saints were holy.' He is the one who agrees to his friend's conditions for visiting Shirdi and accompanies him from Mumbai. Notably, during their visit, Sai Baba specifically asks Kaka Mahajani for Dakshina on two separate occasions, while pointedly asking for nothing from his companion.