Sahih Bukhari
Sahih Bukhari Volume 001, Book 003, Hadith Number 109.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 03. Knowledge
Narated By Salama : I heard the Prophet saying, "Whoever (intentionally) ascribes to me what I have not said then (surely) let him occupy his seat in Hell-fire."