It was narrated from that 'Ali said:
"The Messenger of Allah (ﷺ) said: 'Do not tell lies about me, for telling lies about me leads to Hell (Fire)." (JA)
English reference (JA): Vol. 1, Book 1, Hadith 31 (JA)
Arabic reference (JA): Book 1, Hadith 32 (JA)