Can you explain the origin of the name 'Sai Baba' and describe his appearance when he first met Mhalasapati?

The name 'Sai Baba' originated from a greeting. As detailed in Chapter 0, when the Maharaj first entered the Khandoba temple in Shirdi, he encountered a resident named Mhalasapati. At that moment, the Maharaj was wearing a kafni, a cap, and a dhoti over his body. Upon seeing him, Mhalasapati welcomed him with the words "Aavo Sai Baba," which means "Come, Sai Baba." The Maharaj held onto this name until the end, and as Chapter 0 mentions, when asked his name in a commission, he replied, "They call me Sai Baba."