Musnad Ahmad 5:97

Muhammad ibn Ja‘far narrated to us, Shu‘bah narrated to us, from al-Hakam, from a man from the people of Basra, who said: The people of Basra call him Abu Muwarri‘, and he said: And the people of Kufa call him Abu Muhammad. He said: The Messenger of Allah (peace and blessings of Allah be upon him) was at a funeral—then he mentioned the hadith, and he did not say "from ‘Ali"—and he said: "And no image except that he smeared it." He said: I did not come to you, O Messenger of Allah, until I had not left a single image without smearing it. And he said: "Do not be a tempter, nor an arrogant one."