Al-Kahf 18:83

<h2>The Story of Dhul-Qarnayn Allah says to His Prophet ,</h2><div class="arabic uthmani">وَيَسْـَلُونَكَ</div><p>(And they ask you) O Muhammad ,</p><div class="arabic uthmani">عَن ذِى الْقَرْنَيْنِ</div><p>(about Dhul-Qarnayn.) i.e., about his story. We have already mentioned how the disbelievers of Makkah sent word to the People of the Book and asked them for some information with which they could test the Prophet . They (the People of the Book) said, `Ask him about a man who traveled extensively throughout the earth, and about some young men who nobody knows what they did, and about the Ruh (the soul),' then Surat Al-Kahf was revealed. Dhul-Qarnayn had great Power</p><div class="arabic uthmani">إِنَّا مَكَّنَّا لَهُ فِى الاٌّرْضِ</div><p>(Verily, We established him in the earth,) means, `We have given him great power, so that he had all that kings could have of might, armies, war equipment and siege machinery.' So he had dominion over the east and the west, all countries and their kings submitted to him, and all the nations, Arab and non-Arab, served him. Some of them said he was called Dhul-Qarnayn (the one with two horns) because he reached the two "Horns" of the sun, east and west, where it rises and where it sets.</p><div class="arabic uthmani">وَآتَيْنَـهُ مِن …

They will ask thee of Dhu'l-Qarneyn. Say: I shall recite unto you a remembrance of him.

They ask thee concerning Zul-qarnain. Say, "I will rehearse to you something of his story."

And they ask you about Dhul-Qarnain. Say: "I shall recite to you something of his story."

And they ask you about Zul-Qarnain. Say, “I will tell you something about him.”