Some Muslims and other commentators have identified Dhul Qarnayn with Alexander the Great . But they don’t have any evidence approves their opinion. According to the last holy book( the holy Qura’an) which been revealed to the prophet Muhammad (peace be upon him), the story of Dhul Qarnayn been mentioned there in a brief expression , the most beautiful style, and an accurate event , shown as a real story without any kind of imagination, contradiction or lying as Allah almighty said ((ويسألونك عن ذي القرنين قل سألوا عليكم منه ذكراAnd they ask you( you means the prophet Mohammad PBUH) about Dhul Qarnayn ,say: ” I shall recite to you something of his story.” And also said: (إنا مكنا له في الأرض وآتيناه من كل شيء سببا) Verily, we established him in the earth, and we gave him the means of everything.
Allah the almighty told us in the holy Quran that Dhul Qarnayn had arrived the east and west of the earth and contributed to build the dam of Ya’juj and Ma’juj( Gog and Magog) in a very a wonderful way of engineering by inspired and success of Allah the almighty.
His story wasn’t legends or myths and fantasies as some of the commentators said but a true one been mentioned to the prophet Muhammad (pbuh) by Allah the almighty as Allah said in the holy book (إن هذا لهو القصص الحق وما من إله إلا الله وإن الله لهو العزيز الحكيم) Verlily this is the true narrative non has the right to be worshipped but Allah, the one and the only true God, who has neither a wife nor a son. And indeed Allah is the All- Mighty, the All- Wise.
Dhul Qarnayn was a fair and righteous king of the east and west of the world and Allah granted him with strength and power to walk on land for a long distances from east to west. The prophet Muhammad ( pbuh) has told us about the story of Dhul Qarnayn and said: ( The earth has been ruled by four people : two are believers and two are disbelievers. The two believers are the prophet Solaiman ( pbuh) and Dhul Qarnayn, and the two disbelievers are Namroud and Bokhtanser.
The holy Quran described Dhul Qarnayn as a fair and righteous king, who has a completed faith among Allah the almighty. On the other hand, the holy Qur”an did not mention any certain or clear name for Dhul Qarnayn but only mentioned the nickname, as Allah the almighty said: (ويسألونك عن ذي القرنين) And they ask you( you means the prophet Mohammad PBUH) about Dhul Qarnayn ,say: ” I shall recite to you something of his story. And also said: (قالو يا ذا القرنين إن يأجوج ومأجوج مفسدون في الأرض فهل نجعل لك خرجا عل أن تجعل بيننا وبينهم سدا) They said: “O Dhul-Qarnain! Verily Ya’jûj and Ma’jûj (Gog and Magog) are doing great mischief in the land. Shall we then pay you a tribute in order that you might erect a barrier between us and them?” .
For this, Dhul Qarnayn is not Alexander the Great and this is the reality because no one of the scholars or commentators through the time of history or biography could proved or confirmed that. The only truth is what the holy Qur’an said and confirmed.