Al-Mulk 29

قُلْ هُوَ ٱلرَّحْمَـٰنُ ءَامَنَّا بِهِۦ وَعَلَيْهِ تَوَكَّلْنَا ۖ فَسَتَعْلَمُونَ مَنْ هُوَ فِى ضَلَـٰلٍ مُّبِينٍ

qul huwa l-raḥmānu āmannā bihi waʿalayhi tawakkalnā fasataʿlamūna man huwa fī ḍalālin mubīnin

Say, "He is the Most Merciful; we have believed in Him, and upon Him we have relied. And you will [come to] know who it is that is in clear error."