Based on Sapatnekar's story, how does the text explain Sai Baba's ability to know everything about everyone?

The text explains Sai Baba's omniscience using profound spiritual concepts after Sapatnekar wonders how Baba could know his life story. Shri Sai Satcharitra Chapter 48 states that for Baba, everything was as clear as a "gooseberry in the palm of the hand." This is because he is the form of Brahman, and the entire universe is considered his family. The author explains that Sai is an incarnation representing the "expansion of oneness," meaning there is no distinction of "mine" and "thine" for him. Because he is merged with the Supreme Being, the language of duality does not apply to him, and he has manifested as the entire universe in detail. This non-dual state is presented as the foundation of his all-knowing nature.