Musnad Ahmad 937:27

'Affan narrated to us, Hammam narrated to us, 'Asim narrated to us, from al-Ma'rur ibn Suwayd, that Abu Dharr said: The Truthful, the Believed [the Prophet], may Allah bless him and grant him peace, narrated to us, in what he narrates from his Lord, the Almighty and Majestic, that He said: "A good deed is [rewarded] by ten times its like or more, and a bad deed is [punished] by one, or I forgive. And if you were to meet Me with the earth's capacity of sins, as long as you do not associate anything with Me, I would meet you with its capacity of forgiveness." He said: And the capacity of the earth means the fullness of the earth.