What is the story behind the portrait of Sai Baba that Dixit saw at Mirikar's house?

The portrait of Sai Baba that H.S. Dixit encountered at Mirikar's residence had a special history, as detailed in Chapter 51. This photograph was deeply cherished by Megha, a devoted disciple of Baba, who worshipped it with great reverence as if it were Lord Shankar himself. The portrait's glass had broken, so it was sent from Shirdi to Ahmednagar with Balasaheb Mirikar for repairs. After being fixed, the portrait was kept covered with a cloth in Mirikar's drawing room, seemingly waiting for Dixit's arrival. Just after Dixit and Madhavrao finalized their travel plans, Balasaheb unveiled it, entrusting the sacred, repaired image to Madhavrao for its return journey to Shirdi.