Musnad Abu Ya'la al-Mawsili 111:141

Ubayd Allah ibn Umar narrated to us, Yahya ibn Sa'id narrated to us, Ubayd Allah ibn al-Akhnas narrated to us, Ibn Abi Mulaykah narrated to me, from Ibn Abbas, who said: The Messenger of Allah (ﷺ) said: "It is as if I am looking at him: black, splay-footed, tearing it down stone by stone," meaning the Ka'bah.