Surah An-Nur, ayah 31

وَقُل لِّلۡمُؤۡمِنَٰتِ يَغۡضُضۡنَ مِنۡ أَبۡصَٰرِهِنَّ وَيَحۡفَظۡنَ فُرُوجَهُنَّ وَلَا يُبۡدِينَ زِينَتَهُنَّ إِلَّا مَا ظَهَرَ مِنۡهَاۖ وَلۡيَضۡرِبۡنَ بِخُمُرِهِنَّ عَلَىٰ جُيُوبِهِنَّۖ وَلَا يُبۡدِينَ زِينَتَهُنَّ إِلَّا لِبُعُولَتِهِنَّ أَوۡ ءَابَآئِهِنَّ أَوۡ ءَابَآءِ بُعُولَتِهِنَّ أَوۡ أَبۡنَآئِهِنَّ أَوۡ أَبۡنَآءِ بُعُولَتِهِنَّ أَوۡ إِخۡوَٰنِهِنَّ أَوۡ بَنِيٓ إِخۡوَٰنِهِنَّ أَوۡ بَنِيٓ أَخَوَٰتِهِنَّ أَوۡ نِسَآئِهِنَّ أَوۡ مَا مَلَكَتۡ أَيۡمَٰنُهُنَّ أَوِ ٱلتَّٰبِعِينَ غَيۡرِ أُوْلِي ٱلۡإِرۡبَةِ مِنَ ٱلرِّجَالِ أَوِ ٱلطِّفۡلِ ٱلَّذِينَ لَمۡ يَظۡهَرُواْ عَلَىٰ عَوۡرَٰتِ ٱلنِّسَآءِۖ وَلَا يَضۡرِبۡنَ بِأَرۡجُلِهِنَّ لِيُعۡلَمَ مَا يُخۡفِينَ مِن زِينَتِهِنَّۚ وَتُوبُوٓاْ إِلَى ٱللَّهِ جَمِيعًا أَيُّهَ ٱلۡمُؤۡمِنُونَ لَعَلَّكُمۡ تُفۡلِحُونَ ٣١

Waqul lil-mu'mināti yaghdudna min absārihinna wayahfazna furūjahunna walā yubdīna zīnatahunna illā mā zahara minhā walyadribna bikhumurihinna 'alā juyūbihinna walā yubdīna zīnatahunna illā libu'ūlatihinna aw ābā'ihinna aw ābā'i bu'ūlatihinna aw abnā'ihinna aw abnā'i bu'ūlatihinna aw ikhwānihinna aw banī ikhwānihinna aw banī akhawātihinna aw nisā'ihinna aw mā malakat aymānuhunna awit-tābi'īna ghayri ulil-irbati minar-rijāli awit-tiflil-ladhīna lam yazharū 'alā 'awrātin-nisā'i walā yadribna bi arjulihinna liyu'lama mā yukhfīna min zīnatihinna watūbū ilallāhi jamī'an ayyuhal-mu'minūna la'allakum tuflihūn

And tell the believing women to reduce [some] of their vision⁹⁹⁰ and guard their private parts and not expose their adornment⁹⁹¹ except that which [necessarily] appears thereof⁹⁹² and to wrap [a portion of] their headcovers over their chests and not expose their adornment [i.e., beauty] except to their husbands, their fathers, their husbands' fathers, their sons, their husbands' sons, their brothers, their brothers' sons, their sisters' sons, their women, that which their right hands possess [i.e., slaves], or those male attendants having no physical desire,⁹⁹³ or children who are not yet aware of the private aspects of women. And let them not stamp their feet to make known what they conceal of their adornment. And turn to Allāh in repentance, all of you, O believers, that you might succeed.