Based on the account of his arrival in Shirdi, what is revealed about Sai Baba's identity and the origin of his name?

Chapter 5 provides profound insights into Sai Baba's nature and how he received his name. The text describes him as an eternal and ancient being, transcending conventional labels. It explicitly states he was neither Hindu nor Muslim and was without caste, creed, or lineage, with his true form being self-knowledge. The origin of his name is also explained. When the wedding party, which included Baba, arrived in Shirdi, they stopped near Khandoba’s temple. Upon seeing the Fakir, someone, identified as Mahalsapati, greeted him with the respectful salutation, "Ya Sai," which means "Welcome, Sai." This address became the name by which he was known from then on.