Chapter 20 describes Sai Baba as being 'originally formless.' How does the text explain his manifestation and interaction with devotees?

In Chapter 20, Sai Baba is described as being originally formless but having taken on a physical form for the benefit and sake of his devotees. The text explains this by stating he accepted the role of the actress "Maya" and truly played his part like an actor. This divine play is illustrated by the vivid scene after the noon Aarti, where, in his physical form, he mercifully distributes Udi, applies it to devotees' foreheads, and speaks to them with great love. This demonstrates how the formless Absolute manifested in a tangible way to guide and shower grace upon those who came to him.