Musannaf Ibn Abi Shayba 3:4180

Waki’ narrated to us, from Hisham al-Dastawa’i, from ‘Abd al-Karim, from ‘Umayr ibn Abi Umayyah, who said: I sat between Abu al-‘Aliyah and Muslim ibn Yasar, and they forbade me [from doing so].