Knowledge
3/38. Chapter:
The sin of a person who tells a lie against the Prophet (saws)
Sahih Bukhari
حَدَّثَنَا مَكِّيُّ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا يَزِيدُ بْنُ أَبِي عُبَيْدٍ، عَنْ سَلَمَةَ، قَالَ سَمِعْتُ النَّبِيَّ صلى الله عليه وسلم يَقُولُ " مَنْ يَقُلْ عَلَىَّ مَا لَمْ أَقُلْ فَلْيَتَبَوَّأْ مَقْعَدَهُ مِنَ النَّارِ ".
Narrated Salama: I heard the Prophet (ﷺ) saying, "Whoever (intentionally) ascribes to me what I have not said then (surely) let him occupy his seat in Hell-fire."
Reference : Sahih al-Bukhari 109In-book reference : Book 3, Hadith 51USC-MSA web (English) reference : Vol. 1, Book 3, Hadith 109