Musnad Abu Ya'la al-Mawsili 3:253

Isma'il, the son of the daughter of al-Suddi, narrated to us, [saying]: Sharik narrated to us, from Mansur, from Rib'i ibn Hirash, from Ali, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "Do not lie about me, for whoever lies about me will enter the Fire."