No. "Because Muslims say so" is not proof. This is a logical fallacy called begging the question: a circular argument in which the conclusion was included in the premise. For example: "The word of Zorbo the Great is flawless and perfect. We know this because it says so in The Great and Infallible Book of Zorbo's Best and Most Truest Things that are Definitely True and Should Not Ever Be Questioned." Do you see it now?
No. "Because Muslims say so" is not proof. This is a logical fallacy called begging the question: a circular argument in which the conclusion was included in the premise. For example: "The word of Zorbo the Great is flawless and perfect. We know this because it says so in The Great and Infallible Book of Zorbo's Best and Most Truest Things that are Definitely True and Should Not Ever Be Questioned." Do you see it now?