Musnad Ahmad 30:709

Muhammad ibn Bakr al-Bursani narrated to us, Ja'far—meaning Ibn Burqan—narrated to us, he said: I heard Yazid ibn al-Asamm, from Abu Hurairah, who said: The Messenger of Allah, may Allah bless him and grant him peace, said: "Indeed, Allah, the Almighty and Majestic, does not look at your forms and your wealth, but He looks at your hearts and your deeds."