How did Sai Baba's conduct challenge the traditional rules of caste and ritual purity?

Sai Baba's actions, as described in Chapter 7, consistently defied and transcended the rigid social structures of caste and ritual purity. The text notes that even the most high-ranking Brahmins and Agnihotris (keepers of the sacred fire) would abandon their pride in ritual purity and prostrate before him. He was considered the same to all castes, with no distinction of birth mattering to him in the slightest. His complete lack of ego regarding the body was evident in his indifference to ritual contamination; the scripture mentions that his mind felt no disgust even if a dog were to put its mouth into the food, a powerful demonstration of his enlightened perspective.