What was Sai Baba's attitude towards caste and social purity as depicted in Chapter 7?

According to Chapter 7, Sai Baba completely transcended all notions of caste and ritual purity. The text explicitly states that for one who has no ego regarding the body, labels like Hindu or Muslim, Shudra or outcaste, do not matter in the slightest. He was the same to all castes, and there was no distinction of birth for Him. This is illustrated by the fact that the 'best of Brahmins' and even Agnihotris, who are keepers of sacred fire, would abandon their pride in ritual purity and prostrate before Him. Chapter 7 also mentions that His mind felt no disgust even if a dog were to put its mouth into the food, demonstrating His complete detachment from conventional social norms and his profound equanimity.