Mukhtasar Bukhari

Narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "The example of the one who memorizes and recites the Qur'an is like the owner of camels tied with a rope; if he takes care of them, he will keep them, and if he neglects them, they will run away."

Narrated Abdullah bin Mas'ud (may Allah be pleased with him): The Prophet (peace and blessings of Allah be upon him) said: "It is bad that any of you says, 'I have forgotten such-and-such verse.' Rather, he should say, 'I have been made to forget it.' And keep reciting the Qur'an, for it escapes from the hearts of men faster than camels do."

Narrated by Sayyiduna Abu Musa (may Allah be pleased with him) from the Noble Prophet (peace and blessings of Allah be upon him) that he said: "Keep reciting the Qur'an regularly. By the One in Whose hand is my soul! The Qur'an escapes from the hearts of men faster than a camel that breaks its rope and runs away."