How did Sai Baba's life and practices blur the lines between Hinduism and Islam?

Chapter 7 of the Shri Sai Satcharitra details how Sai Baba's very existence was a paradox that defied religious classification. For instance, if someone called him a Hindu, he physically resembled a Muslim (Yavana), and vice versa. He resided in a mosque, a Muslim practice, yet maintained a sacred Hindu fire (Dhuni) there day and night. The text also notes that while his ears were pierced like a Hindu, his circumcision was evident. This deliberate ambiguity is a central theme, showing that his incarnation was holy and transcended both religions, as he was neither exclusively Hindu nor Muslim.