حَتَّىٰٓ إِذَا بَلَغَ مَغۡرِبَ ٱلشَّمۡسِ وَجَدَهَا تَغۡرُبُ فِي عَيۡنٍ حَمِئَةٖ وَوَجَدَ عِندَهَا قَوۡمٗاۖ قُلۡنَا يَٰذَا ٱلۡقَرۡنَيۡنِ إِمَّآ أَن تُعَذِّبَ وَإِمَّآ أَن تَتَّخِذَ فِيهِمۡ حُسۡنٗا
Hattaaa izaa balagha maghribash shamsi wajadahaaa taghrubu fee 'aynin hami'a tinw wa wajada 'indahaa qawmaa; qulnaa yaa Zal Qarnaini immaaa an tu'az ziba wa immaaa an tattakhiza feehim husnaa
English Translation
Until, when he reached the setting of the sun, he found it [as if] setting in a spring of dark mud, and he found near it a people. Allah said, "O Dhul-Qarnayn, either you punish [them] or else adopt among them [a way of] goodness
— Saheeh International