What is the main story introduced in Chapter 41 of the Sai Satcharitra?

Chapter 41 introduces a fascinating story about how a physical portrait of Sai Baba arrived unexpectedly at the narrator's house. As detailed in the chapter, this event fulfilled a dream the narrator had where Sai promised to come for a meal on a Holi festival day. The chapter explains that a man named Alli Mohammed was the one who brought the photo at the perfect moment, just as the narrator was about to have lunch. The story is presented as a clear example of Sai's divine play, or Leela, and how He fulfills the desires of His devotees at the exact right time. The chapter sets the stage for Alli Mohammed to narrate how he came to possess the picture.