Can you explain the philosophical concepts of "I-ness" and "So-ham" as they relate to Sai Baba in Chapter 36?

Chapter 36 uses philosophical concepts to describe Sai Baba's transcendent nature. The text states that the "playful Sai himself takes over," moving beyond the speaker's "I-ness," which refers to the ego or sense of self. This implies his actions are guided by a divine will, not personal identity. Furthermore, the chapter notes he is "indifferent to the 'I am He' (So-ham) attitude." So-ham is a powerful mantra signifying unity with the Supreme. His indifference suggests a state beyond spiritual pride, as he instead "delights in the service of those liberated in Brahman," emphasizing humility and service.