You mentioned Balasaheb Deo. Who did Sai Baba tell him to feed a black dog, and for what purpose was this instruction given?

The provided text from Chapter 41 does not contain any information about Sai Baba instructing Balasaheb Deo, or anyone else, to feed a black dog. The passages you've provided focus entirely on Balasaheb Deo's personal struggle and strong desire to regularly read the Dnyaneshwari. While the text mentions Sai's love for His devotees and His habit of warding off their difficulties, it provides no details about specific instructions like feeding an animal. The narrative is centered on Deo's resolution to wait for a direct order from Sai to commence his reading, not on other tasks.