Torah is the book which was given to Sayyidna Musa (علیہ السلام)

In the language of the Holy Qur'an, al-Furgan الفرقان is a term signifying something which separates truth from falsehood or distinguishes the one from the other. In the present verse, it refers either to (a) the injunctions of the Shari` ah which are to be found in the Torah, for the Shari` ah resolves all the differences that may arise with regard to the doctrines or the practice of good deeds; or to (b) miracles which decide between a true or a false claim in a palpable manner; or even to (c) the Torah itself which has the twin qualities of being a Book of Allah and of being an instrument for separating truth from falsehood.