What was Sai Baba's view on caste and ritual purity? Did he treat people differently based on their background?

Based on the descriptions in Chapter 7, Sai Baba was completely beyond all distinctions of caste and ritual purity. The text states that for one surrendered to God like Him, caste did not matter in the slightest. This is evidenced by the fact that the 'best of Brahmins' and Agnihotris (keepers of sacred fire), who were typically very strict about ritual purity, would abandon their pride and prostrate before Him. The chapter further explains that since He had no ego regarding His body, He was the same to all castes and felt no disgust even if a dog were to put its mouth in the food, showing his profound equanimity.