The name 'Sai Baba' is universally known. Based on the introductory chapter, can you explain how this name came to be and how Maharaj himself acknowledged it?

The introduction in Chapter 0 explains the origin of the name "Sai Baba" quite clearly. When Maharaj first arrived in Shirdi and entered the Khandoba temple, a devotee of Khandoba named Mhalasapati saw him and spontaneously welcomed him with the phrase "Aavo Sai Baba." As the text notes, Maharaj held onto that name until the end. It became so intrinsically linked to him that later, when his testimony was taken in a commission and he was asked his name, he simply replied, "They call me Sai Baba," confirming his acceptance of the name given to him by his devotee.