The Messenger of Allah ﷺ said, "Whoever deliberately lies about me, let him take his seat in the Fire."
حدثنا أبو بكر بن أبي شيبة وسويد بن سعيد وعبد الله بن عامر بن زرارة وإسمعيل بن موسى قالوا حدثنا شريك عن سماك
قال رسول الله ﷺ من كذب علي متعمدا فليتبوأ مقعده من النار
[Sahih] Reported by Tirmidhi, Fitan, chapter on holding fast to fear of Allah at the time of conquest and victory, no. 2257, from the hadith of Shubah, from Simak, in a longer form, and he said, This is a hasan sahih hadith.