Musnad Abu Ya'la al-Mawsili 54:11

Abu Hammam narrated to us, Ibn Wahb narrated to us, Yahya bin Ayyub informed me, from Zabban bin Fa'id, from Sahl bin Mu'adh al-Juhani, from his father, that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Whoever reads the Quran and acts upon what is in it, his parents will be crowned with a crown on the Day of Resurrection, the light of which is better than the light of the sun in the houses of the people of this world, if it were in them. So what do you think of the one who acts upon it?"