قُل هُوَ الرَّحمـٰنُ آمَنّا بِهِ وَعَلَيهِ تَوَكَّلنا ۖ فَسَتَعلَمونَ مَن هُوَ في ضَلالٍ مُبينٍ

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."