Musannaf Ibn Abi Shayba 21:437

'Abd al-Rahman ibn Muhammad al-Muharibi narrated to us, from Layth, from Shahr, from 'Abd al-Rahman ibn Ghanam, from Abu Dharr, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: Allah says: "O My servants, all of you are sinners except for whom I have pardoned, so seek My forgiveness and I will forgive you. And whoever knows that I have the power to forgive him, I will forgive him and I do not care. O My servants, all of you are astray except for whom I have guided, so seek guidance from Me and I will guide you. O My servants, all of you are poor except for whom I have enriched, so ask Me and I will give to you."