The Quran instructs both Muslim men and women to dress in a modest way, but there is disagreement on how these instructions should be interpreted.
The verses relating to dress use the terms khimār (head cover) and jilbāb (a dress or cloak) rather than ḥijāb.
) is a veil traditionally worn by Muslim women in the presence of adult males outside of their immediate family, which usually covers the head and chest.
The term can further refer to any head, face, or body covering worn by Muslim women that conforms to a certain standard of modesty.
And say to the believing women that they should lower their gaze and guard their modesty; that they should not display their beauty and ornaments except what (must ordinarily) appear thereof; that they should draw their khimār over their breasts and not display their beauty except to their husband, their fathers, their husband's fathers, their sons, their husbands' sons, their brothers or their brothers' sons, or their sisters' sons, or their (Muslim) women, or the slaves whom their right hands possess, or male servants free of physical needs, or small children who have no sense of the shame of sex; and that they should not strike their feet in order to draw attention to their hidden ornaments.
Hijab can also be used to refer to the seclusion of women from men in the public sphere, or it may denote a metaphysical dimension, for example referring to "the veil which separates man or the world from God".
Most often, it is worn by Muslim women as a symbol of modesty and privacy.