The holy Qur'an`s attending to the subject of hijab, like most social subjects, is in a gradual way and based on a sociological basis. God, the Almighty, having explained natural and fundamental problems of hijab and preparing appropriate cultural ground and making a reference to a lawful relation between man and woman as guarding one`s modesty and eye, attends to the how and limit of hijab. One of the most important verses in the field is 31 of Noor light, which describes women`s lawful dressing in detail. Despite numerous interpretations, due to the absoluteness of some of its words, lack of exact examples and contrary traditions the verse has been disputed, especially in the recent centuries due to the prevalence of Western culture and a different view on women. Some view common interpretations of the verse critically and give contrary ideas in the field. Regarding various comments, demurs and the traditions of the subject, the paper has studied the verse.