Can you explain Sai Baba's discourse on His all-pervading nature, the 'Ashtadha-prakriti', and how it relates to true worship?

In Chapter 3, Sai Baba explains that true worship transcends His perishable physical body and should be directed towards the imperishable Brahman. He identifies Himself with this ultimate reality, stating He is present everywhere in the form of the 'eightfold nature' or Ashtadha-prakriti, a concept He notes was also explained to Arjuna in the Gita. Baba clarifies that everything in the universe with a name or form, both moving and unmoving, is a manifestation of this nature. True worship, therefore, is to recognize His omnipresence with the feeling that 'I am everywhere,' which leads to the dissolution of ego ('I' and 'mine') and the cessation of all worldly desires.