The Satcharitra says Sai is 'originally formless.' What does Chapter 20 say about why he took a physical form and how he appeared to his devotees?

According to Chapter 20 of the Shri Sai Satcharitra, Sai Baba is described as being originally formless but took on a physical form for the benefit of his devotees. The text explains that he accepted the role of "Maya," playing his part like a divine actor. The chapter provides a vivid description of this physical form in action, particularly after the midday Aarti in Shirdi. It portrays the Maharaj with a "most merciful gaze" as he distributes Udi to the devotees. He would fill his hands with the sacred ash, place it in their cupped hands, and lovingly apply it to their foreheads with his thumb, demonstrating boundless love in his heart.