What is the ruling on swearing by the Book of Allah?

Question:
The questioner asks: Is it permissible to swear by the words of Allah while pointing to the mushaf, or to say, "and this book"?

Answer:
Yes, it is permissible to swear by the words of Allah, because the words of Allah are one of His attributes. If you swear by the words of Allah, or by the majesty of Allah, or by the life of Allah, if you swear by one of the attributes of Allah, you have sworn by Allah, Mighty and Majestic. The Prophet (peace and blessings be upon him) said: I seek refuge in the perfect words of Allah from the evil of what He has created.
If seeking refuge in the words of Allah is permissible, then swearing by the words of Allah is permissible, because it is one of His attributes. If you swear by it, you have sworn by the one who possesses it, which is Allah, Glorified and Exalted is He. It is permissible to say, "by the words of Allah," or "by the Qur'an," or "by such-and-such a surah," or "by such-and-such a verse," or to say, "by the majesty of Allah," or "by the life of Allah," or "by the face of Allah." It is permissible to swear by one of the attributes of Allah, Mighty and Majestic. Yes.