What is the story behind the portrait of Sai Baba that Kakasaheb Dixit encountered in Nagar?

The portrait of Sai Baba that Kakasaheb Dixit saw was a significant object with its own history. As detailed in Chapter 51, this specific photograph was deeply venerated by Megha, one of Baba's devoted disciples, who worshipped it as if it were Lord Shankar himself. The glass on the portrait had broken, so it was sent from Shirdi with Balasaheb Mirikar to Nagar to be repaired. Mirikar kept the repaired portrait covered with a cloth in his drawing room. Its reveal to Dixit at the very moment he was planning his journey was seen as a profound miracle, as if Baba Himself had appeared in image form to accompany him to Shirdi.