Who was Alli Mohammed and what was his initial experience with the Sai Baba portrait as told in Chapter 41?

In Chapter 41, Alli Mohammed is identified as the person who delivered a portrait of Sai Baba to the narrator at a very significant moment. The chapter shares the beginning of his personal story with the picture. While wandering the streets of Mumbai, Alli came across a merchant selling beautiful pictures of saints and holy men. As he looked through them, one portrait of Sai Baba stood out, its attractiveness surpassing all the others. Since Sai was already his worshipped deity, Alli felt an immediate connection and eagerness to own it. As recounted in Chapter 41, he paid the price in cash, brought the portrait home, hung it on his wall, and enjoyed taking its Darshan daily out of his great love for Baba.