(Al-Kahf) 18 : 90
حَتَّىٰ إِذَا بَلَغَ مَطْلِعَ الشَّمْسِ وَجَدَهَا تَطْلُعُ عَلَىٰ قَوْمٍ لَمْ نَجْعَلْ لَهُمْ مِنْ دُونِهَا سِتْرًا
Until when he came to the rising of the sun, he found it rising on a people for whom We had not made against it any shield.
That people didn’t have any hills, mountains, or construction for shielding the hot sunlight.