Musannaf Ibn Abi Shayba 16:1071

Abu Bakr narrated to us, he said: Azhar narrated to us, from Ibn ‘Awn, who said: I entered upon al-Qasim while he was in the upper part of Makkah in his house. I saw in his house a curtain (hajlah) in which there were depictions of the beaver and the phoenix.