Musannaf Ibn Abi Shayba 3:6414

Waki’ narrated to us, he said: Abu Janab Yahya bin Abi Hayyah al-Kalbi narrated to us, from Abu al-Juwayriyah al-Jarmi, who said: We sat behind Ibn Abbas while he was praying behind the Maqam (Station of Ibrahim), and he was wearing a velvet cloak of his. He said: So we spoke, and when he heard our voices, he turned away.