حَتّىٰ إِذا بَلَغَ مَغرِبَ الشَّمسِ وَجَدَها تَغرُبُ في عَينٍ حَمِئَةٍ وَوَجَدَ عِندَها قَومًا ۗ قُلنا يا ذَا القَرنَينِ إِمّا أَن تُعَذِّبَ وَإِمّا أَن تَتَّخِذَ فيهِم حُسنًا

Upon reaching the setting of the sun, he found it setting in a vast muddy spring, and he found people there. We said, “O Dhul-Qarnayn, you can either punish or treat them with kindness.”