Musnad Abu Ya'la al-Mawsili 110:281

Abdullah ibn Umar ibn Aban narrated to us, Muhammad ibn Fudayl narrated to us, from al-Walid ibn Jami’, from the one who narrated it to him, from Ibn Abbas, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Close up the rows, for I see the devils passing between you as if they were the lambs of al-Hadhf."