Is it permissible to cleanse oneself (istijmar) with books of falsehood, such as those of magic and the Torah, even if they contain the names of Allah and Quranic verses?

Since these papers contain Qur'an, Dhikr (remembrance of Allah), the name of Allah, or anything revered in Islam, it is impermissible to use them for istijmar (cleaning oneself after relieving nature).