The sin of a person who tells a lie against the Prophet (ﷺ)
حَدَّثَنَا أَبُو مَعْمَرٍ، قَالَ حَدَّثَنَا عَبْدُ الْوَارِثِ، عَنْ عَبْدِ الْعَزِيزِ، قَالَ أَنَسٌ إِنَّهُ لَيَمْنَعُنِي أَنْ أُحَدِّثَكُمْ حَدِيثًا كَثِيرًا أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " مَنْ تَعَمَّدَ عَلَىَّ كَذِبًا فَلْيَتَبَوَّأْ مَقْعَدَهُ مِنَ النَّارِ ".
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."