If you are a follower of Quran only, then you will know that circumscision is nowhere mentioned as a requirement. Therefore, it is not required. Only Jews are obsessed with it, perhaps to mark a race they think are the chosen one.
the muslims have blindly followed this without any basis. Ask yourself, if the Quran does not mention anything about this, then at what stage the prophet was cicumscised? At least the tradition says that he was 40 yeras old when the Quran began to reveal to him. And since the Arabs were not practicing cicumscision, then the prophet was not circumscised.