He—may Allah have mercy on him—was asked:

A man cursed the Jews, cursed his religion, and reviled the Torah. Is it permissible for a Muslim to revile their scripture or not?

He answered:

Praise be to Allah. No one may curse the Torah. Indeed, anyone who curses the Torah without qualification must be called upon to repent; if he does not repent, he is to be put to death. If he knows that it was revealed by Allah and that belief in it is obligatory, he is to be put to death for reviling it, and his repentance is not accepted according to the stronger of the two scholarly views.

But if he curses the religion that the Jews practise in this age, there is nothing wrong with his doing so, for they and their religion are accursed. Likewise, if he reviles the Torah in their possession in terms that make clear that he intends to speak of its distortion—for example, by saying, “The copies of this Torah have been altered, and it is not permissible to act upon their contents. Anyone who today follows its altered and abrogated laws is a disbeliever”—then such statements and the like are true, and no blame attaches to the one who says them. And Allah knows best.