Surah Al-Kahf, ayah 83

وَيَسۡـَٔلُونَكَ عَن ذِي ٱلۡقَرۡنَيۡنِۖ قُلۡ سَأَتۡلُواْ عَلَيۡكُم مِّنۡهُ ذِكۡرًا ٨٣

Wayas'alūnaka 'an dhil-qarnayni qul sa'atlū 'alaykum minhu dhikrā

And they ask you, [O Muḥammad], about Dhul-Qarnayn. Say, "I will recite to you about him a report."