Sahih al-Bukhari 106
Book 3: Knowledge · Narrated by `Ali
Arabic
حَدَّثَنَا عَلِيُّ بْنُ الْجَعْدِ، قَالَ أَخْبَرَنَا شُعْبَةُ، قَالَ أَخْبَرَنِي مَنْصُورٌ، قَالَ سَمِعْتُ رِبْعِيَّ بْنَ حِرَاشٍ، يَقُولُ سَمِعْتُ عَلِيًّا، يَقُولُ قَالَ النَّبِيُّ صلى الله عليه وسلم " لاَ تَكْذِبُوا عَلَىَّ، فَإِنَّهُ مَنْ كَذَبَ عَلَىَّ فَلْيَلِجِ النَّارَ ".
English translation
Narrated `Ali:The Prophet (ﷺ) said, "Do not tell a lie against me for whoever tells a lie against me (intentionally) then he will surely enter the Hell-fire
Reference: Sahih al-Bukhari 106, Book of Knowledge. English translation by Dr. Muhammad Muhsin Khan.