The Prophet ﷺ said, "Do not lie about me, for whoever lies about me, let him enter the Fire."
قال النبي ﷺ: لا تكذبوا علي فإنه من كذب علي فليلج النار.
Bukhari narrated it in the Book of Knowledge (106) and Muslim in the Introduction (1), both from the hadith of Shubah, from Mansur, from Rabi bin Harash, that he heard Ali giving a sermon. He said, then he mentioned it.Other hadiths with the same meaning have been mentioned in their appropriate places. Among the distinctive features of the Prophet ﷺ is that lying about him may be considered disbelief. If the liar repents, his repentance is accepted, but there is disagreement about whether his narration is accepted. Imam Ahmad and some of the Shafiis held that his narration is not accepted.