From Sahih Bukhari (Hadith 107):
Narrated `Abdullah bin Az-Zubair:I said to my father, 'I do not hear from you any narration (Hadith) of Allah's Apostle as I hear (his narration) from so and so?" Az-Zubair replied, 'I was always with him (the Prophet) and I heard him saying, "Whoever tells a lie against me (intentionally) then (surely) let him occupy, his seat in Hellfire
Reference: Bukhari 107