Ummm…not actually boss
The Qur’an repeatedly says the Torah and the Gospel were real, true, and given by God. Surah 5:43–47 says Jews must judge by the Torah and Christians must judge by the Gospel, and that anyone who does not judge by those books is wicked.
The Qur’an never claims the Torah or Gospel were corrupted before Muhammad. It only accuses some people of misinterpreting or hiding verses, not altering the text. Surah 6:34 and 10:64 say no one can change God’s words. If Scripture was corrupted, the Qur’an contradicts itself.
The phrase “confirm what is with you” means the Torah and Gospel that actually existed in the 7th century, not some lost originals. Muslim scholars agree the Qur’an is talking about texts people already had in their possession.
Soooo….If the book you claim is corrupted is the same book your own scripture calls unchangeable, authoritative, and required for judgment, that’s a HUUUUGE internal contradiction….