What is the significance of the Sai Baba portrait mentioned during Dixit's visit to Nagar?

The portrait of Sai Baba holds a special significance in this narrative from Chapter 51. After Dixit and Madhavrao had decided on their travel plans, Balasaheb Mirikar unveiled a portrait of Baba that had been kept covered in his drawing room. This was not just any photograph; it was one that Megha, a devoted disciple, used to worship with great love, viewing it as Lord Shankar himself. The glass on the portrait had broken and it was sent from Shirdi with Balasaheb for repairs in Nagar. Having been repaired, it was as if the portrait was waiting for Dixit's arrival. Balasaheb entrusted it to Madhavrao for its return journey to Shirdi.