Musannaf Ibn Abi Shayba 3:1844

Hushaym narrated to us, he said: Yahya ibn Sa'id narrated to us, from Sa'id ibn al-Musayyib, that a storyteller used to sit near his gathering and would recite a prostration verse, but Sa'id would not prostrate, even though he had heard it. He said: It was said to him, "What prevents you from prostrating?" He said, "I did not sit for him."