Imaam al-Shaafi`ee: The Qur’aan is the Speech of Allaah and NOT created:

بسم الله والحمد لله والصلاة والسلام على رسول الله ، وبعد

Allaah تعالى says:

﴿بَدِيعُ السَّمَاوَاتِ وَالْأَرْضِ ۖ وَإِذَا قَضَىٰ أَمْرًا فَإِنَّمَا يَقُولُ لَهُ كُن فَيَكُونُ﴾

{The Originator of the heavens and the earth; when He decrees a matter, He only says to it: كُن (kun: "Be!") - and it is.} [Surah al-Baqarah (2): 117]

[See also: (3):47; (3):59; (6):73; (16):40; (19):35; (36):82; (40):68]

Imaam al-Shaafi`ee رحمه الله said:

“Verily! Allaah تعالى created the creation by just saying: كُن (Be!). So, IF كُن is in itself created, then it is like (saying): ‘The creation created the creation.’”

[al-Hilyah (9/111)]