The skilful reader is with the noble scribes

Al-mahiru bi-l-qur'ani ma'a-s-safarati-l-kirami-l-bararah, wa-lladhi yaqra'u-l-qur'ana wa yataa'ta'u fihi wa huwa alayhi shaqq, lahu ajran.

"The one skilled in the Qur'an is with the noble, righteous scribes. The one who recites the Qur'an stammering, for whom it is difficult, receives two rewards."

Narrated by Aisha. Sahih al-Bukhari 4937, Sahih Muslim 798