Mukhtasar Sahih Bukhari — Hadith 1821

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."