(38) باب إِثْمِ مَنْ كَذَبَ عَلَى النَّبِيِّ صلى الله عليه وسلم
Narrated Anas:
The fact which stops me from narrating a great number of Hadiths to you is that the Prophet (ﷺ) said: "Whoever tells a lie against me intentionally, then (surely) let him occupy his seat in Hell-fire."
Reference: Sahih al-Bukhari 108
In-book reference: Book 3, Hadith 50
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 3, Hadith 108