First of all, it depends on which Islamic scholar you ask. They are all in disagreement as to what extent the Quran advocates this. However, the Quran does urge men and women to dress and behave modestly in society. The Quran does not specifically mention the Burqa or tells women to wear such extremely confining clothes. The Ulema or the Scholars do agree that the Quran says women should not wear extremely revealing clothes. Modern day muslims base their authority regarding the Burqa on the Hadith or collected traditions of life in the days of Muhammad the prophet. But a noteworthy objection is that Hadith describes 7th century Arabian life, which should not be imposed on modern day Muslims world wide. Muslim communities also argue that women are to dress modestly but should not be forced or punished to wear a Burqa. This is why many Muslim communities have different preferences regarding the application of the Burqa.