I heard a story about two Muslim men bringing a portrait of Baba to Hemadpant's house. Can you tell me more about that?

There appears to be a misunderstanding regarding that event, as the details in the scripture are quite different. According to Chapter 51, it was not two Muslim men, but rather Madhavrao Deshpande and Kakasaheb Dixit who handled the portrait. The event did not take place at Hemadpant's house, but at the house of Kakasaheb Mirikar. The portrait was entrusted to Madhavrao and Dixit by Balasaheb Mirikar so they could take it with them to Shirdi. The text emphasizes this as a wonderful coincidence arranged by Baba for his devotee, Dixit.