لَّوْلَا جَاءُوا عَلَيْهِ بِأَرْبَعَةِ شُهَدَاءَ فَإِذْ لَمْ يَأْتُوا بِالشُّهَدَاءِ فَأُولَئِكَ عِندَ اللَّهِ هُمُ الْكَاذِبُونَ

Why did they not bring four witnesses to it? So when they could not bring the witnesses, they are liars in Allah’s sight.