Sura 23 Al-Mu'minun (The Believers), ayah 38

1. إِنْ هُوَ إِلَّا رَجُلٌ افْتَرَىٰ عَلَى اللَّهِ كَذِبًا وَمَا نَحْنُ لَهُ بِمُؤْمِنِينَ

   He is not but a man who has invented a lie about Allah, and we will not believe him."

   23:38

Translation: Saheeh International