Musnad Abu Ya'la al-Mawsili 3:176

Abu Kurayb Muhammad ibn al-Ala’ al-Hamdani narrated to us, Waki’ narrated to us, from Hisham, from Qatadah, from Sa’id ibn al-Musayyib, from Ali, that he prepared food and invited the Messenger of Allah (may Allah bless him and grant him peace). He came, and he saw in the house a curtain in which there were images, so he returned. He (Ali) said: I said, "O Messenger of Allah, what made you return? May my father and mother be sacrificed for you." He said: "Indeed, there is a curtain in the house in which there are images, and the angels do not enter a house in which there are images."