The Messenger of Allah ﷺ said, "Whoever deliberately lies about me, let him take his seat in the Fire."
قال حدثنا الضحاك بن مخلد قال حدثنا يزيد بن أبي عبيد
قال رسول الله ﷺ من كذب علي متعمدا فليتبوأ مقعده من النار
Its isnad is sahih. Dahhak bin Makhlad is Abu Asim al-Nabil, the well-known trustworthy narrator, who is frequently referred to by his kunya. Yazid bin Abu Ubayd is the freed slave of Salama bin Akwa, and he is trustworthy, his hadith being found in the collections of the group. This hadith was mentioned earlier at 14189, and it is mutawatir.