Aisha reported: The Prophet, peace and blessings be upon him, said, "The example of those who recite the Quran and memorize it is that of one who is with the 'righteous and noble scribes' (80:15); and the example of one who recites the Quran with great difficulty is that of one who receives a double reward."
Source: Sahih Bukhari 4653
Grade: Sahih (authentic) according to Al-Bukhari
عَنْ عَائِشَةَ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ مَثَلُ الَّذِي يَقْرَأُ الْقُرْآنَ وَهُوَ حَافِظٌ لَهُ مَعَ السَّفَرَةِ الْكِرَامِ الْبَرَرَةِ وَمَثَلُ الَّذِي يَقْرَأُ وَهُوَ يَتَعَاهَدُهُ وَهُوَ عَلَيْهِ شَدِيدٌ فَلَهُ أَجْرَانِ
4653 صحيح البخاري كِتَاب تَفْسِيرِ الْقُرْآنِ سُورَةُ عَبَسَ عَبَسَ وَتَوَلَّى كَلَحَ وَأَعْرَض