حَتَّىٰٓ إِذَا بَلَغَ مَغْرِبَ ٱلشَّمْسِ وَجَدَهَا تَغْرُبُ فِى عَيْنٍ حَمِئَةٍ وَوَجَدَ عِندَهَا قَوْمًا ۗ قُلْنَا يَـٰذَا ٱلْقَرْنَيْنِ إِمَّآ أَن تُعَذِّبَ وَإِمَّآ أَن تَتَّخِذَ فِيهِمْ حُسْنًا
ḥattā idhā balagha maghriba l-shamsi wajadahā taghrubu fī ʿaynin ḥami-atin wawajada ʿindahā qawman qul'nā yādhā l-qarnayni immā an tuʿadhiba wa-immā an tattakhidha fīhim ḥus'nan
then, when he came to the setting of the sun, he found it [seemed to be] setting into a muddy spring. Nearby he found some people and We said, ‘Dhu ’l-Qarnayn, you may choose [which of them] to punish or show kindness to.’
Until, when he reached the setting place of the sun, he found it setting in a spring of black muddy (or hot) water. And he found near it a people. We (Allâh) said (by inspiration): "O Dhul-Qarnain! Either you punish them, or treat them with kindness."