Musnad Ahmad 27:1169

'Abd al-Razzaq narrated to us, Ma'mar narrated to us, from al-Zuhri, from Salim, from his father, that the Prophet, peace and blessings of Allah be upon him, said: "There is no envy except in two: A man whom Allah has given wealth, so he spends from it during the hours of the night and the hours of the day, and a man whom Allah has given the Qur'an, so he stands with it during the hours of the night and the hours of the day."