The Prophet ﷺ said: '"Whoever narrates a Hadith from me thinking it to be false, then he is one of the two liars." (Either the one who invents a lie or the one who repeats it; both are liars).
عَنِ النَّبِيِّ ﷺ قَالَ مَنْ حَدَّثَ عَنِّي حَدِيثًا وَهُوَ يُرَى أَنَّهُ كَذِبٌ فَهُوَ أَحَدُ الْكَاذِبَيْنِ