I have read a lot about the attitude of the Koran to the Torah, but I have not yet found a normal answer to this question. Look at this verse 2:85.
Then, you are those [same ones who are] killing one another and evicting a party of your people from their homes, cooperating against them in sin and aggression. And if they come to you as captives, you ransom them, although their eviction was forbidden to you. So do you believe in part of the Scripture and disbelieve in part? Then what is the recompense for those who do that among you except disgrace in worldly life; and on the Day of Resurrection they will be sent back to the severest of punishment. And Allah is not unaware of what you do. ( Al-Baqarah : 85)
In the verse, the Jews are clearly called to believe in the whole Torah, and not in part of it. Many people write that the Koran confirms only the preserved part of the Torah. But in 2:85, Allah, on the contrary, says that Jews should believe in the whole Torah. That is, Allah calls the whole Torah the truth, not a part of it. How to explain it? After all, many scholars of Islam say that the Torah is distorted, but verse 2:85 says the opposite.
We can say that today's Torah is not identical to the one that was in seventh-century Arabia. Although we have evidence that the Torah has been preserved since the second century (the Sinai Codex, the Alexandrian Codex). But we see that there are many mistakes in today's Torah (as well as in those codes) and that it is not from Allah. So which Torah is the Koran talking about?