What was the origin and significance of the Sai Baba portrait that Kakasaheb Dixit encountered before his trip?

The portrait Kakasaheb Dixit saw was deeply significant and had a notable history, as explained in Chapter 51. It was a photograph that Megha, a devoted disciple of Baba, used to worship with great reverence, regarding it as Lord Shankar. The glass of the portrait had broken, so it was sent from Shirdi with Balasaheb to Nagar for repairs. After being repaired, it was kept covered in Mirikar’s drawing room. Its sudden unveiling for Dixit, just as he was about to depart for Shirdi, was seen as a profound miracle and a sign of Baba's grace. Dixit was overwhelmed with joy upon seeing the image of the one whose darshan he longed for, feeling it was Baba himself coming to accompany him on his journey.