Wathilah bin Al-Asqa' (May Allah be pleased with him) reported:
Messenger of Allah (ﷺ) said, "Of the worst lies are: to claim a false father, or to pretend to have seen what one has not seen (tell a false dream), or to attribute to the Messenger of Allah (ﷺ) what he has not said."[Al-Bukhari]. (FR)
App reference (FR): Book 5, Hadith 31 (FR)
Arabic/English book reference (FR): Book 5, Hadith 844 (FR)