Surah An-Nur (The Light), Verse 31

وَقُلْ لِّلْمُؤْمِنٰتِ یَغْضُضْنَ مِنْ اَبْصَارِهِنَّ وَیَحْفَظْنَ فُرُوْجَهُنَّ وَلَا یُبْدِیْنَ زِیْنَتَهُنَّ اِلَّا مَا ظَهَرَ مِنْهَا وَلْیَضْرِبْنَ بِخُمُرِهِنَّ عَلٰی جُیُوْبِهِنَّ وَلَا یُبْدِیْنَ زِیْنَتَهُنَّ اِلَّا لِبُعُوْلَتِهِنَّ اَوْ اٰبَآىِٕهِنَّ اَوْ اٰبَآءِ بُعُوْلَتِهِنَّ اَوْ اَبْنَآىِٕهِنَّ اَوْ اَبْنَآءِ بُعُوْلَتِهِنَّ اَوْ اِخْوَانِهِنَّ اَوْ بَنِیْۤ اِخْوَانِهِنَّ اَوْ بَنِیْۤ اَخَوٰتِهِنَّ اَوْ نِسَآىِٕهِنَّ اَوْ مَا مَلَكَتْ اَیْمَانُهُنَّ اَوِ التّٰبِعِیْنَ غَیْرِ اُولِی الْاِرْبَةِ مِنَ الرِّجَالِ اَوِ الطِّفْلِ الَّذِیْنَ لَمْ یَظْهَرُوْا عَلٰی عَوْرٰتِ النِّسَآءِ وَلَا یَضْرِبْنَ بِاَرْجُلِهِنَّ لِیُعْلَمَ مَا یُخْفِیْنَ مِنْ زِیْنَتِهِنَّ وَتُوْبُوْۤا اِلَی اللّٰهِ جَمِیْعًا اَیُّهَ الْمُؤْمِنُوْنَ لَعَلَّكُمْ تُفْلِحُوْنَ ۟

Wa qul lilmu'minaati yaghdudna min absaarihinna wa yahfazna furoojahunna wa laa yubdeena zeenatahunna illaa maa zahara minhaa wala yadribanna bikhumurihinna 'alaa juyoobihinna wa laa yubdeena zeenatahunna illaa libu'oolatihinna aw aabaaa'i hinna aw aabaaa'i bu'oolati hinna aw abnaaa'ihinnaa aw abnaaa'i bu'oolatihinnna aw ikhwaanihinnna aw baneee ikhwaanihinna aw banee akhawaatihinna aw nisaaa'i hinna aw maa malakat aimaanuhunna awit taabi'eena ghairi ilil irbati minar rijaali awit tiflillazeena lam yazharoo 'alaa 'awraatin nisaaa'i wala yadribnna bi arjulihinna liyu'lama maa yukhfeena min zeenatihinn; wa toobooo ilallaahi jammee'an aiyuhal mu'minoona la'allakum tuflihoon

“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 veils over their bosoms and not display their beauty except to their husbands, their fathers, their husband's fathers, their sons, their husbands' sons, their brothers or their brothers' sons, or their sisters' sons, or their 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. And O ye Believers! turn ye all together towards Allah, that ye may attain Bliss.”

Quran 24:31 (Yusuf Ali Translation)