Sura al-Nisāʾ 4:102

وَإِذَا كُنتَ فِيهِمْ فَأَقَمْتَ لَهُمُ ٱلصَّلَوٰةَ فَلْتَقُمْ طَآئِفَةٌ مِّنْهُم مَّعَكَ وَلْيَأْخُذُوٓا۟ أَسْلِحَتَهُمْ فَإِذَا سَجَدُوا۟ فَلْيَكُونُوا۟ مِن وَرَآئِكُمْ وَلْتَأْتِ طَآئِفَةٌ أُخْرَىٰ لَمْ يُصَلُّوا۟ فَلْيُصَلُّوا۟ مَعَكَ وَلْيَأْخُذُوا۟ حِذْرَهُمْ وَأَسْلِحَتَهُمْ وَدَّ ٱلَّذِينَ كَفَرُوا۟ لَوْ تَغْفُلُونَ عَنْ أَسْلِحَتِكُمْ وَأَمْتِعَتِكُمْ فَيَمِيلُونَ عَلَيْكُم مَّيْلَةً وَٰحِدَةً وَلَا جُنَاحَ عَلَيْكُمْ إِن كَانَ بِكُمْ أَذًى مِّن مَّطَرٍ أَوْ كُنتُم مَّرْضَىٰٓ أَن تَضَعُوٓا۟ أَسْلِحَتَكُمْ وَخُذُوا۟ حِذْرَكُمْ إِنَّ ٱللَّـهَ أَعَدَّ لِلْكَٰفِرِينَ عَذَابًا مُّهِينًا

wa-idhā kunta fīhim fa-aqamta lahumu l-ṣalāta faltaqum ṭāʾifatun minhum maʿaka wa-lyakhudhū asliḥatahum fa-idhā sajadū falyakūnū min warāikum wa-ltati ṭāʾifatun ukhrā lam yuṣallū fa-lyuṣallū maʿaka wa-lyakhudhū ḥidhrahum waasliḥatahum wadda lladhīna kafarū law taghfulūna ʿan asliḥatikum wa-amtiʿatikum fa-yamīlūna ʿalaykum maylatan wāḥidatan wa-lā junāḥa ʿalaykum in kāna bikum adhan min maṭarin aw kuntum marḍā an taḍaʿū asliḥatakum wa-khudhū ḥidhrakum inna allāha aʿadda lil-kāfirīna ʿadhāban muhīnan

When thou (O Messenger) art with them, and standest to lead them in prayer, Let one party of them stand up (in prayer) with thee, Taking their arms with them: When they finish their prostrations, let them Take their position in the rear. And let the other party come up which hath not yet prayed - and let them pray with thee, Taking all precaution, and bearing arms: the Unbelievers wish, if ye were negligent of your arms and your baggage, to assault you in a single rush. But there is no blame on you if ye put away your arms because of the inconvenience of rain or because ye are ill; but take (every) precaution for yourselves. For the Unbelievers Allah hath prepared a humiliating punishment.

Sura al-Nūr 24:58

يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ لِيَسْتَـْٔذِنكُمُ ٱلَّذِينَ مَلَكَتْ أَيْمَٰنُكُمْ وَٱلَّذِينَ لَمْ يَبْلُغُوا۟ ٱلْحُلُمَ مِنكُمْ ثَلَٰثَ مَرَّٰتٍ مِّن قَبْلِ صَلَوٰةِ ٱلْفَجْرِ وَحِينَ تَضَعُونَ ثِيَابَكُم مِّنَ ٱلظَّهِيرَةِ وَمِنۢ بَعْدِ صَلَوٰةِ ٱلْعِشَآءِ ثَلَٰثُ عَوْرَٰتٍ لَّكُمْ لَيْسَ عَلَيْكُمْ وَلَا عَلَيْهِمْ جُنَاحٌۢ بَعْدَهُنَّ طَوَّٰفُونَ عَلَيْكُم بَعْضُكُمْ عَلَىٰ بَعْضٍ كَذَٰلِكَ يُبَيِّنُ ٱللَّـهُ لَكُمُ ٱلْأَيَٰتِ وَٱللَّـهُ عَلِيمٌ حَكِيمٌ

yā-ayyuhā lladhīna āmanū li-yastaʾdhinkumu lladhīna malakat aymānukum wa-lladhīna lam yablughū l-ḥuluma minkum thalātha marrātin min qabli ṣalawti l-fajri wa-ḥīna taḍaʿūna thiyābakum mina l-ẓahīrati wa-min baʿdi ṣalawti l-ʿishāi thalāthu ʿawrātin la-kum laysa ʿalaykum wa-lā ʿalayhim junāḥun baʿdahunna ṭawwāfūna ʿalaykum baʿḍukum ʿalā baʿḍin ka-dhālika yubayyinu allāhu lakumu l-ayāti wallāhu ʿalīmun ḥakīmun

O ye who believe! let those whom your right hands possess, and the (children) among you who have not come of age ask your permission (before they come to your presence), on three occasions: before morning prayer; the while ye doff your clothes for the noonday heat; and after the late-night prayer: these are your three times of undress: outside those times it is not wrong for you or for them to move about attending to each other: Thus does Allah make clear the Signs to you: for Allah is full of knowledge and wisdom.