Is it permissible to say in supplication, "O Lord of the the Qur'an," knowing that the Qur'an is the uncreated Word of Allah?

The Quran is the word of Allah Almighty and is not created. Therefore, it is not permissible to say, "O Lord of the Quran," because the Quran is one of Allah's attributes, and His attributes are not created, just as His essence is not. However, if the speaker intends by "O Lord of the Quran" to mean "O Master of the Quran," then there is no harm. Nevertheless, it is better to avoid it due to the ambiguity it might convey.