Can you explain how Sai Baba showed he was above distinctions of caste and ritual purity, based on Chapter 7?

Chapter 7 provides powerful examples of Sai Baba's complete transcendence of caste and purity norms. The text states that for him, "caste did not matter even in the slightest degree," as he had no ego regarding the body and was the same to all. This is proven by the fact that the most respected Brahmins and Agnihotris, who are keepers of sacred fires, would abandon their pride in ritual purity and prostrate before him. The chapter also illustrates his profound equanimity by noting that his mind felt no disgust even if a dog were to put its mouth into the food, demonstrating a consciousness far beyond ordinary social distinctions.