It was narrated that Abu Hurairah said:
"The Messenger of Allah said: 'Learn the Qur'an, recite it and go to bed, for the likeness of the Qur'an and the one who learns it and acts upon it is that of a sack filled with musk, which spreads its fragrance everywhere. And the likeness of one who learns it then goes to bed with it in his heart is that of a sack that is tied up from which no fragrance comes out.'"

حَدَّثَنَا عَمْرُو بْنُ عَبْدِ اللَّهِ الأَوْدِيُّ، حَدَّثَنَا أَبُو أُسَامَةَ، عَنْ عَبْدِ الْحَمِيدِ بْنِ جَعْفَرٍ، عَنِ الْمَقْبُرِيِّ، عَنْ عَطَاءٍ، مَوْلَى أَبِي أَحْمَدَ عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ ـ ﷺ ـ " تَعَلَّمُوا الْقُرْآنَ وَاقْرَءُوهُ وَارْقُدُوا فَإِنَّ مَثَلَ الْقُرْآنِ وَمَنْ تَعَلَّمَهُ فَقَامَ بِهِ كَمَثَلِ جِرَابٍ مَحْشُوٍّ مِسْكًا يَفُوحُ رِيحُهُ كُلَّ مَكَانٍ وَمَثَلُ مَنْ تَعَلَّمَهُ فَرَقَدَ وَهُوَ فِي جَوْفِهِ كَمَثَلِ جِرَابٍ أُوكِيَ عَلَى مِسْكٍ " .