One who listens to the Qur'an (while it is being recited) will be kept away from the evils of this world; and one who recites the Qur'an will be kept away from the trials of the hereafter. And the person who listens to even one verse of the book of Allah - this is better (for him) than possessing a mansion of gold.
Biharul Anwar, Volume 92, Page 19 - Shi'ite Hadith