Musnad Ahmad 33:481

Abdullah ibn al-Harith narrated to us, from Ibn Jurayj, Abu al-Zubayr informed me that he heard Jabir ibn Abdullah claiming: "The Prophet, peace and blessings of Allah be upon him, forbade images in the house, and he forbade a man from making that. And the Prophet, peace and blessings of Allah be upon him, commanded Umar ibn al-Khattab at the time of the Conquest, while he was at al-Batha, to go to the Kaaba and erase every image in it. And he did not enter the House until every image in it was erased."