…you seem pretty well informed about Islam yourself… i’m assuming you are aware that this is the only religion where Allah has said (paraphrasing here…don’t all jump on me at once) that He will protect the sanctity of the Quran himself… now by going on this principle, it is Only the Quran that is safe from corruption. …again, here’s your answer…
…now don’t ask for quotes, evidence etc… I doubt very much that you haven’t heard the above before…