Surah Al-Mulk, ayah 29

67:29

قُلۡ هُوَ ٱلرَّحۡمَٰنُ ءَامَنَّا بِهِۦ وَعَلَيۡهِ تَوَكَّلۡنَاۖ فَسَتَعۡلَمُونَ مَنۡ هُوَ فِي ضَلَٰلٖ مُّبِينٖ ٢٩

Qul huwar-rahmānu āmannā bihī wa'alayhi tawakkalnā fasata'lamūna man huwa fī dalālim mubīn

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."