Can you explain the story behind the portrait of Sai that is mentioned at the beginning of the chapter?

The text in Chapter 41 begins with a narrator recounting the history of a particular portrait of Sai Baba. The narrator explains to a listener that this specific image was the subject of a private discussion with a priest named Ismu. Together, they made a firm determination that the portrait should be kept in that very place and offered by the narrator. Following this decision, the narrator presented the image to the listener but had to leave quickly as the listener's meal was ready. The narrator had intended to explain the full story later, but a full nine years passed before they met again. This unexpected reunion, combined with a wonderful dream the listener had, finally provided the opportunity to recall and share this past history.