﴿ حَتَّىٰٓ إِذَا بَلَغَ مَطْلِعَ ٱلشَّمْسِ وَجَدَهَا تَطْلُعُ عَلَىٰ قَوْمٍۢ لَّمْ نَجْعَل لَّهُم مِّن دُونِهَا سِتْرًۭا ﴾

“[And then he marched eastwards] till, when he came to the rising of the sun he found that it was rising on a people for whom We had provided no coverings against it:”

(Till, when he reached the rising place of the sun, he found it rising on a people for whom We had appointed no helper therefrom) these people had no shelter to protect them from the sun, they had no mountains, trees or clothes. They were naked creatures who were blind to the Truth.