What is the origin story behind the name 'Sai Baba' as explained in the book's introduction?

The name 'Sai Baba' was bestowed upon Maharaj on his arrival in Shirdi. As Chapter 0 recounts, after traveling with a wedding party, Maharaj entered the Khandoba temple. There, he met a resident goldsmith named Mhalasapati. Upon seeing Maharaj, who was dressed in a kafni, cap, and dhoti, Mhalasapati spontaneously welcomed him with the words "Aavo Sai Baba," which translates to "Come, Sai Baba." Maharaj accepted this name and was known as Sai Baba for the rest of his life, even stating in a later testimony, "They call me Sai Baba."