Sahih Al Bukhari 1: Chapter 3, Hadith 108

(108) The sin of a person who tells a lie against the Prophet

حَدَّثَنَا أَبُو مَعْمَرٍ، ‏‏‏‏‏‏قَالَ:‏‏‏‏ حَدَّثَنَا عَبْدُ الْوَارِثِ، ‏‏‏‏‏‏عَنْ عَبْدِ الْعَزِيزِ، ‏‏‏‏‏‏قَالَ أَنَسٌ:‏‏‏‏ إِنَّهُ لَيَمْنَعُنِي أَنْ أُحَدِّثَكُمْ حَدِيثًا كَثِيرًا، ‏‏‏‏‏‏أَنّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ، ‏‏‏‏‏‏قَالَ:‏‏‏‏ "مَنْ تَعَمَّدَ عَلَيَّ كَذِبًا فَلْيَتَبَوَّأْ مَقْعَدَهُ مِنَ النَّارِ".

SAHIH HADITH:

Narrated Anas: The fact which stops me from narrating a great number of Hadiths to you is that the Prophet said: Whoever tells a lie against me intentionally, then (surely) let him occupy his seat in Hell-fire.

REFERENCE:

Sahih Al Bukhari 1: Chapter 3, Hadith 108