Musnad Abu Ya'la al-Mawsili 115:173

Abu Musa narrated to us, Mu'adh ibn Hisham narrated to us, my father narrated to me, from Yunus, from Qatadah, from Anas, who said: The Prophet (peace and blessings of Allah be upon him) never ate upon a *khwan* (dining table), nor in a *sukrujah* (small bowl/saucer), nor was thin bread (flatbread) ever baked for him. He (the narrator) said: So I said to Anas, "Upon what did they eat?" He said, "Upon the *sufrah* (leather dining mat)." Abu Musa said: This is Yunus ibn Abi al-Furat al-Iskaf.