The example of the believer who recites the Qur’âan...

In the two Authentic Books on the authority of Abu Musa from the Prophet (صلّى اللَّهُ عليه وسلّم): 

مَثَلُ الْمُؤْمِنِ الَّذِي يَقْرَأُ الْقُرْآنَ كَمَثَلِ الأُتْرُجَّة طَعْمُها طَيِّبٌ وَ رِيْحُها طَيِّبٌ ، وَ مَثَلُ الْمُؤْمِنِ الَّذِي لَا يَقْرَأُ الْقُرْآنَ كَمَثَلِ التَّمْرَةِ طَعْمُها طَيِّبٌ وَ  لَا رِيْحَ لَهَا، وَ مَثَلُ الْمُنَافِقِ الَّذِي يَقْرَأُ الْقُرْآنَ كَمَثَلِ الرَّيْحَانَة رِيْحُها طَيِّبٌ وَ لَا طَعْمَ لَهَا، وَمَثَلُ الْمُنَافِقِ الَّذِي لَا يَقْرَأُ الْقُرْآنَ كَمَثَلِ الْحَنْظَلَةِ طَعْمُهَا مُرٌّ وَ لَا رِيْحَ لَهَا

“The example of the believer who recites the Qur’âan is like the example of a citron, its taste and smell is good. The example of the believer who doesn't recite the Qur’âan  is like the example of a date-fruit; its taste is good without having any smell to it. The example of the hypocrite who recites the Qur’âan  is like the example of sweet basil, it smells good and its taste is bitter. The example of the hypocrite who doesn’t recite the Qur’âan is like the example of colocynth, its taste is bitter with no smell to it.” 

(Bukhâri & Muslim)