Musnad Ahmad 1153:1519

'Abd al-Rahman ibn Mahdi narrated to us, from Zuhayr, from 'Amr—meaning Ibn Abi 'Amr, the freed slave of al-Muttalib—from al-Muttalib—meaning Ibn Hantab—from 'Aisha, from the Prophet (peace and blessings of Allah be upon him), who said: "Indeed, a man may attain, through his good character, the rank of the one who fasts and prays at night."