From Sahih Muslim (Hadith 6636):
Abdullah b. Mas'ud reported that Muhammad (ﷺ) said:Should I inform you that slandering, that is in fact a tale-carrying which creates dissension amongst people, (and) he (further) said: The person tells the truth until he is recorded as truthful, and lie tells a lie until lie is recorded as a liar
Reference: Muslim 6636