Surah An-Nur (The Light), Verse 13

لَوْلَا جَآءُوْ عَلَیْهِ بِاَرْبَعَةِ شُهَدَآءَ فَاِذْ لَمْ یَاْتُوْا بِالشُّهَدَآءِ فَاُولٰٓىِٕكَ عِنْدَ اللّٰهِ هُمُ الْكٰذِبُوْنَ ۟

Law laa jaaa'oo 'alaihi bi-arba'ati shuhadaaa'; fa iz lam yaatoo bishshuhadaaa'i fa ulaaa 'ika 'indal laahi humul kaaziboon

“Why did they not bring four witnesses to prove it? When they have not brought the witnesses, such men, in the sight of Allah, (stand forth) themselves as liars!”

Quran 24:13 (Yusuf Ali Translation)