ما هي الأدلة المنطقية والتاريخية -غير القرآنية والحديثية- التي تثبت أن القرآن لم يتغير بعد وفاة النبي محمد صلى الله عليه وسلم؟

The Holy Quran is preserved from any addition, deletion, or alteration because of its continuous transmission from generation to generation. They recite it in their prayers and teach it to their children. If any alteration were to occur, the young before the old would refute it, and this is an undeniable proof for any rational person. Another indication that the Quran is free from alteration is the established fact of its miraculous nature and Allah's challenge to produce anything like it. If it were to be added to or altered, the quality of its miraculousness would cease to exist, and this is proof of Allah's preservation of His Book.