Sakandar Zulqarnain is an Urdu Book by Ghulam Rabbani. Allama Syuti says that it is very difficult to know and understand the accurate meanings, history, details and commentary in first reading of Holy Book,Koran. But if Muhammad PBUH described the verses of Holy Book. There are many secrets in the Holy Book. We need to keep our mind on each word to understand the meanings. He was a great person whose sayings and quotes are mentioned in Koran by Allah. Many writers tried hard to describe and pen down the detail biography of Zulqarnain. Above mentioned author says the difficulty was born when historians failed to know the geography and state philosophy about Zulqarnain. While Asrar Alam says that Zulqarnain is not a person but a designation or a Knighthood by Allah. Here in following book author mention Zulqarnain in detail and I hope it will help you in raising your knowledge.