Is it permissible to cite from books of other religions—such as Hinduism—to prove the validity of certain Islamic issues, and is this considered part of the Prophetic guidance? If it is not a Sunnah, can it be considered an innovation (bid‘ah)? And what is the ruling on Ibn Taymiyyah’s action in his book "Al-Jawab As-Sahih Liman Baddala Din Al-Masih (The Correct Answer to Those Who Altered the Religion of the Messiah)"?

Matters of Islamic law are only established by the Qur’an and the Sunnah, for they are the sole sources of legislation, and by them, the religion was perfected. The Torah and the Gospel have been distorted, and it is not permissible for a Muslim to examine them except for those deeply rooted in knowledge, in order to expose their distortions. It is permissible for a scholar to look into the books of distorted religions and false doctrines to prove their contradictions and to refute their adherents. The book "Al-Jawab As-Sahih li-man baddala Din Al-Masih" (The Correct Answer to Those Who Altered the Religion of the Messiah) by Shaykh al-Islam Ibn Taymiyyah aims to refute theism and expose the distortion of Christian scriptures, not to derive rulings of Islamic law from them. It contains various matters of creed, jurisprudence, and other topics.