Is the Torah mentioned in the Quran, the Old Testament?
It is not the Torah that was given to Moses. Moses was born some 1500 years before Isa AS and the Torah that was given to him by Allah was not in a written form during his lifetime. In fact the first attempt to reduce parts of the Torah into writing was undertaken some 200 ( two hundred ) years after Moses. This included the Ten Commandments, some sayings of Moses and Jacob and some religious legislative texts. 300 years after Moses the Yahvistic version of the Bible was written. 50 years later, the Elohistic version of the Bible emerged. 700 years after Moses, the Books of Amos , Hosea, Micah and Deuteronomy was added to the Yahvistic version of the Bible. This addition continues for the next 700 years till Jesus arrives. Thus from the above, it can be clearly seen that the Pentateuch cannot be equated, nor is it evenly closely related to the Torah. The original Torah of Moses must have been in Hebrew or Aramaic but was not reduced to writing till 200 years after Moses.
