Could you recount the story behind the presentation of a portrait to Sai Baba as mentioned in the source material?

The source material from Chapter 41 tells of a long-delayed story concerning a portrait of Sai. The narrator explains that he and a priest named Ismu had made a mutual and firm determination that this powerful portrait should be offered by the narrator himself. Following through on this resolution, he presented the image to Baba. However, the timing was not right for a long conversation, as Baba's meal was ready, so the narrator left quickly. He had intended to tell the full story behind the portrait's offering 'at leisure,' but a full nine years passed before an unexpected meeting provided the opportunity to finally share the past history.