So far we have been studying the Qur'an from the standpoint...
So far we have been studying the Qur'an from the standpoint of the transmitted history or have occasionally studied some past society in the light of what the Qur'an has said about it. In this connection we have been confronted with some difficulties too. For example we find that while relating the stories of the past the Qur'an does not describe the events in the terms of numerical facts. Not that it has any doubts about the figures, but it omits them intentionally.
For instance, in the story of the People of the Cave, the Holy Qur'an says: Some will say: They were three, their dog the fourth, and some say: Five their dog the sixth, guessing at random; and some say: Seven, and their dog the eighth. Say: (O Prophet!) My Lord is best aware of their number. None knows them except a few. So do not argue about them. (Surah al-Kahf, 18:22) This way of expression shows that the Qur'an intentionally does not pay much attention to transmitted history.
For the purpose of being benefited by historical events, it does not want to make us prisoners of any conventional form. In contrast it wants to break the rigidity of such forms. The Qur'an has an identical attitude in respect of all historical stories. It makes no difference to it whether the events narrated concern such eminent people as the Prophets, or some wicked tyrants or some other extraordinary people.
As such we have no right to fill in any gaps in the Qur'anic stories with any lore, myth, guess or our own personal opinion. We have only to find out what Islam (the Qur'an) aims at by narrating these stories. The fact is that Islam has a special philosophy in regard to the nations and the communities. Similarly it has its own so called sociology. It does not want simply to recount the events, nor is it interested in any particular period of history or in the sociology of any particular people.
If Islam has referred to these things, it has done so purely with a view to deduce certain universal laws which govern all human societies and determine their future course, whether good or bad. Therefore it is of utmost importance for us to find out what laws of history the Qur'an puts forward so that we may understand our society as well as the past societies, be able to ascertain our future course and distinguish between what is right and what is wrong.
There is no doubt that for this purpose the Qur'an is the only reliable source on which we can depend.