The Messenger of Allah ﷺ said, "Whoever deliberately lies about me, let him take his seat in the Fire."
حدثنا أبو هشام الرفاعي حدثنا أبو بكر بن عياش حدثنا عاصم عن زر
قال رسول الله ﷺ من كذب علي متعمدا فليتبوأ مقعده من النار
[Sahih] and it has a corroborating witness mentioned previously. 2257.