How does Baba explain his true, all-pervading nature in contrast to his physical body?

In a profound discourse recorded in Chapter 3, Sai Baba explains that his physical body is perishable, but his true self is the imperishable Brahman, which is worthy of worship. He clarifies that he is not confined to his form but is filled everywhere as the 'eightfold nature' (Ashtadha-prakriti), a concept he notes was also explained by the Lord to Arjuna in the Gita. Baba states, "Whatever has name, form, or shape, in the world of the moving and unmoving, I alone am playing as the eightfold nature." This teaching encourages the devotee to see Sai in all things, dissolving the ego and desires by understanding this universal, non-dual reality.