How did Sai Baba's actions and the attitude of his followers demonstrate his disregard for caste distinctions and ritual purity?

Chapter 7 highlights Sai Baba's complete disregard for caste hierarchy and ritual purity. It states that for Him, caste did not matter in the slightest, whether someone was a Shudra or an outcaste. This is powerfully illustrated by the fact that the most revered Brahmins and keepers of the sacred fire (Agnihotris), who were typically very strict about purity, would abandon their pride and prostrate before Him. The text also mentions that He felt no disgust even if a dog put its mouth into the food, showing His total lack of ego regarding the physical body and its purity.