The example of a companion of the Qur'an is like an owner of hobbled camels. If he vigilantly keeps them tied, he will retain them, but if he releases them, they will run away. [ Muslim]

«إنّما مَثَلُ صَاحبِ الْقُرْآنِ كَمَثَلِ الإِبِلِ المُعَقَّلَةِ، إنْ عَاهَدَ عَلَيْهَا أمْسَكَهَا، وَإنْ أطْلَقَهَا ذَهَبَتْ». (مسلم)