The Messenger of Allah ﷺ said: “Whoever tells a lie about me deliberately, let him take his place in Hell.” (Using translation from Aḥmad 584)
عَنْ رَسُولِ اللهِ ﷺ أَنَّهُ قَالَ مَنْ كَذَبَ عَلَيَّ قَالَ حَسِبْتُ أَنَّهُ قَالَ مُتَعَمِّدًا فَلْيَتَبَوَّأْ مَقْعَدَهُ مِنَ النَّارِ