And O Prophet, enjoin the believing men to restrain their gaze and guard their private parts. This is a more righteous way for them: Allah has knowledge of what they do.(24:30)

O Prophet, enjoin the believing women to restrain their gaze and guard their private parts. and not to display their adornment except that which is displayed of itself, and to draw their veils over their bosoms and not to display their adornment except before their husbands, their fathers, the fathers of their husbands, their sons and the sons of their husbands (from other wives), their brothers, their brothers’ sons, their sisters’ sons, their female associates and those in their possession and male attendants incapable of sex desire and those boys who have not yet attained knowledge of sex matters concerning women; also forbid them to stamp their feet on the ground lest their hidden ornaments should be displayed. O Believers, turn all together towards Allah : it is expected that you will attain true success. (24:31)