How does the author build anticipation for the main story of the portrait's arrival in Chapter 41?

The author of the Sai Satcharitra skillfully builds anticipation in Chapter 41 by framing the main narrative as a fulfillment of a past divine promise. After initial salutations, the text reminds the reader of a dream where Sai promised to come for a meal on Holi. It then declares that the upcoming story will detail the miracle of how His physical portrait arrived at the exact right time. The narrator introduces the storyteller, Alli Mohammed, and labels the account a 'clear Leela' and a 'humorous' and 'fully interesting' story. By urging the listeners to be alert and emphasizing the profundity of Sai's actions, the author creates a sense of wonder and primes the audience to appreciate the divine significance of the events about to be narrated.