Musnad Abu Ya'la al-Mawsili 110:11

Narrated to us al-Mu'alla, narrated to us Abu 'Awanah, from 'Abd al-A'la al-Tha'labi, from Sa'id ibn Jubayr, from Ibn 'Abbas, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "Beware of narrating from me, except for what you know. For whoever lies about me intentionally, let him take his seat in the Fire. And whoever lies about the Qur'an without knowledge, let him take his seat in the Fire."