Abu Hurairah (RAA) narrated that the Messenger of Allah (ﷺ) said:

"He who accuses his slave of committing adultery (without proof) will be punished with the prescribed penalty on the Day of Resurrection unless it is (true) as he said." Agreed upon.

وَعَنْ أَبِي هُرَيْرَةَ ‏- رضى الله عنه ‏- قَالَ: قَالَ رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-{ مِنْ قَذْفَ مَمْلُوكَهُ يُقَامُ عَلَيْهِ اَلْحَدُّ يَوْمَ اَلْقِيَامَةِ, إِلَّا أَنْ يَكُونَ كَمَا قَالَ } مُتَّفَقٌ عَلَيْهِ [1]‏ .‏