What is the origin story of the name 'Sai Baba' as described in the text?

The name 'Sai Baba' originated from his very first encounter in Shirdi. As Chapter 0 recounts, when Maharaj entered the Khandoba temple dressed in a kafni, cap, and dhoti, a man named Mhalasapati saw him and greeted him with the words "Aavo Sai Baba," meaning "Come, Sai Baba." Maharaj accepted this name and it stayed with him for the rest of his life. The text even mentions that when his testimony was taken in a commission, he stated, "They call me Sai Baba."