What is the main story and teaching presented in Chapter 41 of the Sai Satcharitra?

Chapter 41 of the Sai Satcharitra primarily recounts a story illustrating how Sai Baba fulfills the desires of his devotees at the perfect time. The author shares how Sai promised in a dream to come for a meal on Holi, and this was fulfilled by the unexpected arrival of a physical portrait of Baba, brought by a man named Alli Mohammed, just as lunch was about to be served. The chapter also contains Alli Mohammed's own account of how he found and purchased this specific portrait in Mumbai. The key teaching, as explained in Chapter 41, is about the Guru's grace and how focusing on the Guru's feet with love ensures that the Guru tirelessly looks after the devotee's well-being.