What is the primary narrative introduced in Chapter 41 of the Sai Satcharitra?

Chapter 41 of the Sai Satcharitra primarily introduces the miraculous story of how a physical portrait of Sai Baba arrived at the narrator's house at the perfect time. The chapter explains that this event fulfilled a dream in which Sai had promised, "On a Holi festival day, I am coming to your house for a meal today." The narrative highlights that a man named Alli Mohammed was the one who brought the photograph at the very peak moment when the narrator was about to sit for the Holi lunch, thus delighting him and demonstrating Sai's divine play, or Leela. As detailed in this chapter, this story serves as a clear example of how Sai fulfills the desires of his devotees at the exact right moment.