How did Sai Baba demonstrate his indifference to caste distinctions and ritual purity?

Chapter 7 provides several examples of Sai Baba's transcendence of caste and ritual purity norms. It states that the 'best of Brahmins' and 'keepers of the sacred fire (Agnihotris)' would abandon their pride in ritual purity and prostrate before him, despite the ambiguous nature of his religious identity. The text emphasizes that for someone like Baba, who had no ego regarding the body, caste did not matter in the slightest, whether someone was a Shudra or an outcaste. He was the same to all. This complete lack of distinction is further illustrated by the detail that his mind felt no disgust, even if a dog were to put its mouth into the food.