Muhammed explains his methodology for determining which scripture is from God by applying four criteria: claiming divine origin, preservation from the time of revelation, absence of contradictions, and divine evidence that cannot be replicated by humans. He argues that Judaism fails the preservation test because the Dead Sea Scrolls are 1,500 years after Moses, written by unknown authors, and the oral tradition has gaps of 200-300 years between narrators. In contrast, he presents Islam as meeting all four criteria through the Quran's preservation (both oral memorization by millions and early manuscripts), lack of contradictions, and multiple types of divine evidence including scientific accuracy, fulfilled prophecies, and linguistic inimitability.
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