Abu Hurairah (May Allah be pleased with him) said:
I heard the Messenger of Allah (ﷺ) saying, "He who accuses his slave of Zina will receive the punishment (Hadd) of slander on the Day of Resurrection, unless the accusation of Zina was true."[Al- Bukhari and Muslim].
App reference: Book 18, Hadith 53
Arabic/English book reference: Book 18, Hadith 1563