How did Sai Baba's appearance and actions create ambiguity about whether he was Hindu or Muslim?

Chapter 7 explains that Sai Baba's religious identity was profoundly ambiguous and transcended classification. If someone considered him a Hindu, he looked like a Yavana (Muslim), and if called a Muslim, he bore the noble marks of a Hindu. This paradox was reflected in his physical being and his dwelling. For instance, while he was circumcised, a practice associated with Muslims, his ears were pierced, a common Hindu custom. Furthermore, as Chapter 7 notes, he lived in a mosque but kept a sacred Hindu fire (Dhuni) burning there day and night, making it impossible to definitively label him.