Sunan Ibn Majah 31
سنن ابن ماجه#31Sahihحَدَّثَنَا عَبْدُ اللَّهِ بْنُ عَامِرِ بْنِ زُرَارَةَ، وَإِسْمَاعِيلُ بْنُ مُوسَى، قَالاَ حَدَّثَنَا شَرِيكٌ، عَنْ مَنْصُورٍ، عَنْ رِبْعِيِّ بْنِ حِرَاشٍ، عَنْ عَلِيٍّ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " لاَ تَكْذِبُوا عَلَىَّ فَإِنَّ الْكَذِبَ عَلَىَّ يُولِجُ النَّارَ " .
It was narrated from that 'Ali said:"The Messenger of Allah (ﷺ) said: 'Do not tell lies about me, for telling lies about me leads to Hell (Fire)
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Zubair Ali ZaiSahih Bukhari