What does it mean when the text says Sai Baba 'merged into the unmanifest' and is 'one with Brahman'?

When Chapter 43 states that Sai Baba 'merged into the unmanifest' and became 'one with Brahman,' it refers to a profound spiritual transition beyond physical death. It means he transcended his material, three-and-a-half-cubit body to return to his true, formless, and eternal nature as the Supreme Brahman. This state is described as his 'previous unmanifest state.' The text clarifies that this was not an end but a transformation into an all-pervading presence. In this true form, he 'fills the moving and non-moving world' and continues to enjoy his true self while keeping his devotees 'awake.' It underscores the idea that his essence was never limited to his physical form.