لَهُم مِن فَوقِهِم ظُلَلٌ مِنَ النّارِ وَمِن تَحتِهِم ظُلَلٌ ۚ ذٰلِكَ يُخَوِّفُ اللَّهُ بِهِ عِبادَهُ ۚ يا عِبادِ فَاتَّقونِ

Upon them are layers of fire, and beneath them are layers. This is how God instills fear into His beings. “O My beings, be mindful of Me.”