Can you explain the nine-year-old story behind the Sai portrait mentioned in the Satcharitra?

The story behind the Sai portrait involves a firm determination made nine years prior to its telling. The narrator of the account, along with a priest named Ismu, decided that the powerful portrait of Sai should be kept in a specific place and offered by the narrator themselves. As Chapter 41 explains, the narrator presented the image but could not share the full story at that moment because the recipient was about to have a meal. The narrator intended to tell the story later, but a full nine years passed before an unexpected meeting finally provided the opportunity to recount the history, which was further prompted by the recipient sharing a wonderful dream.