No one says about the attributes of the Lord, the Most High, ‘Why?’ except one who doubts about Allah, the Blessed and Most High. The Qur’an is the Speech of Allah, His Revelation and Light. It is not created, since the Qur’an is from Allah and that which is from Allah is not created. This was what Maalik ibn Anas, Ahmad ibn Hanbal and the Scholars before and after them said and debating about it is disbelief. 
1. The Qur’an is the Speech of Allah, hence it is an attribute of Allah. All of Allah’s attributes have been with Him eternally.
Imam Maalik said, "The Qur’an is the Speech of Allah. It is not created." Reported by al-Laalikaa’ee in Sharh Usool I’tiqaad Ahl is-Sunnah (no.414).
Imam Ahmad ibn Hanbal was asked about the one who says that the Qur’an was created, so he said, “(He is) a disbeliever.” Reported by al-Laalikaa’ee in Sharh Usool I’tiqaad Ahl is-Sunnah (no.449).
From: Kitaab Sharh-us-Sunnah by Imam Barbaharee rahimahullah pt 15