"The one who is proficient with the Qur'an will be with the noble and righteous scribes (the angels), and the one who reads it and stumbles over it, finding it difficult, will have two rewards." (Using translation from Ibn Mājah 3779)  

قَالَ رَسُولُ اللهِ ﷺ «الْمَاهِرُ بِالْقُرْآنِ مَعَ السَّفَرَةِ الْكِرَامِ الْبَرَرَةِ وَالَّذِي يَقْرَأُ وَهُوَ يَتَتَعْتَعُ فِيهِ وَهُوَ شَاقٌّ عَلَيْهِ لَهُ أَجْرَانِ»  

One who is skilled in the Qur'an is associated with the noble, upright recording angels, and he who falters when he recites the Qur'an and finds it difficult for him will have a double reward. (Using translation from Abū Dāʾūd 1454)  

عَنِ النَّبِيِّ ﷺ قَالَ «مَثَلُ الَّذِي يَقْرَأُ الْقُرْآنَ وَهُوَ مَاهِرٌ بِهِ مَعَ السَّفَرَةِ الْكِرَامِ الْبَرَرَةِ وَالَّذِي يَقْرَؤُهُ وَهُوَ عَلَيْهِ شَاقٌّ فَلَهُ أَجْرَانِ»