Arabic text
لَّوۡلَا جَآءُو عَلَيۡهِ بِأَرۡبَعَةِ شُهَدَآءَۚ فَإِذۡ لَمۡ يَأۡتُواْ بِٱلشُّهَدَآءِ فَأُوْلَـٰٓئِكَ عِندَ ٱللَّهِ هُمُ ٱلۡكَٰذِبُونَ
Why did they [who slandered] not produce for it four witnesses? And when they do not produce the witnesses, then it is they, in the sight of Allāh, who are the liars.