The Messenger of Allah ﷺ said: "The one who learns the Quran is like the owner of a hobbled camel. If he pays attention to it, he will keep it, but if he releases it, it will go away."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ مَثَلُ صَاحِبِ الْقُرْآنِ كَمَثَلِ صَاحِبِ الإِبِلِ الْمُعَقَّلَةِ إِذَا عَاهَدَ عَلَيْهَا أَمْسَكَهَا وَإِنْ أَطْلَقَهَا ذَهَبَتْ  

Yahya related to me from Malik from Nafi from Abdullah ibn Umar that the Messenger of Allah ﷺ said, "A man who knows the Qur'an well is like a man who has a hobbled camel. If he takes care of it, he keeps it, and if he lets it go, it gets away."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِنَّمَا مَثَلُ صَاحِبِ الْقُرْآنِ كَمَثَلِ صَاحِبِ الإِبِلِ الْمُعَقَّلَةِ إِنْ عَاهَدَ عَلَيْهَا أَمْسَكَهَا وَإِنْ أَطْلَقَهَا ذَهَبَتْ  

[Machine] "That the Messenger of Allah ﷺ said: 'Verily the example of the Qur'an is like that of a tied camel. If its owner takes care of it, it remains with him, and if he neglects it, it goes away. Similarly, when a person establishes a relationship with the Qur'an and recites it day and night, he remembers it, but when he does not recite it, he forgets it.'"  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ «إِنَّمَا مَثَلُ الْقُرْآنِ كَمَثَلِ الْإِبِلِ الْمُعَقَّلَةِ إِذَا عَاهَدَهَا صَاحِبُهَا عَلَى عُقُلِهَا أَمْسَكَهَا وَإِذَا أَغْفَلَهَا ذَهَبَتْ إِذَا قَامَ صَاحِبُ الْقُرْآنِ فَقَرَأَهُ بِاللَّيْلِ وَالنَّهَارِ ذَكَرَهُ وَإِذَا لَمْ يَقْرَأْهُ نَسِيَهُ»