✅ Answer: Pay attention to the following narrations:

1⃣عن عَلِیٍّ قال: إِذَا تَعَرَّی الرَّجُلُ نَظَرَ إِلَیْهِ الشَّیْطَانُ فَطَمِعَ فِیهِ فَاسْتَتِرُوا لَیْسَ لِلرَّجُلِ أَنْ یَکْشِفَ ثِیَابَهُ عَنْ فَخِذَیْهِ و یَجْلِسَ بَیْنَ قَوْمٍ

📚Khisal, p. 630

Amir al-Mu'minin (peace be upon him) said: When a person becomes naked, Satan looks at him and covets him, so cover yourself. A person cannot uncover his thighs and sit among a group!

2⃣عَنِ الصَّادقِ عن آبَائِهِ فی حَدیثِ الْمناهی قال: نَهَی رَسُولُ اللَّهِ عَنِ التَّعَرِّی بِاللَّیْلِ و النَّهَار

📚Fiqh, vol. 4, p. 10

Imam Sadiq (peace be upon him) narrated from his ancestors that the Messenger of Allah (peace be upon him and his family) prohibited being naked at night and during the day!

3⃣عن جَعْفَرِ بْنِ مُحَمَّدٍ عن آبَائِهِ عَنِ النَّبِیِّ قال: إِذَا تَجَامَعَ الرَّجُلُ و الْمَرْأَةُ فَلَا یَتَعَرَّیَانِ فِعْلَ الْحِمَارَیْنِ فَإِنَّ الْمَلَائِکَةَ تَخْرُجُ مِنْ بَیْنِهِمَا إِذَا فَعَلَا ذَلِکَ

📚Al-Ilal al-Shara'i, p. 518, hadith 8

Imam Sadiq (peace be upon him) narrated from his ancestors that the Messenger of Allah (peace be upon him and his family) said: When a man and woman engage in intercourse, they should not be naked like donkeys, for if they do so, the angels leave them!

4⃣عن مُحَمَّدِ بْنِ الْعِیصِ أَنَّهُ سَأَلَ أَبَاعَبْداللَّه فَقَالَ لَهُ أُجَامِعُ وَ أَنَا عُرْیَانٌ فقال لَا و لَا مُسْتَقْبِلَ الْقِبْلَةِ و لَا مُسْتَدْبِرَها

📚Tahdhib, vol. 7, p. 412

Muhammad ibn Ays asked Imam Sadiq (peace be upon him): Can I engage in intercourse while naked? He replied: No! Neither facing the qibla nor with your back to it!

5⃣عن موسی بن بکر عن أَبِی الْحَسَنِ فِی الرَّجُلِ یُجَامِعُ فَیَقَعُ عَنْهُ ثَوْبُهُ قَالَ لَا بَأْسَ

📚Kafi, vol. 5, p. 497

Imam Kazim (peace be upon him) regarding a man who engages in intercourse and his clothes fall off, said: There is no problem!

6⃣عن عبیدالله بن علی الحلبی قال : سَأَلْتُ أَباعَبْداللَّه عَنِ الرَّجُلِ یَغْتَسِلُ بِغَیْرِ إِزَارٍ حَیْثُ لَا یَرَاهُ أَحَدٌ قَالَ لَا بَأْسَ

📚Fiqh, vol. 1, p. 84

Ubaydullah said: I asked Imam Sadiq (peace be upon him) about a person who bathes without an undergarment in a place where no one can see him; the Imam said: There is no problem!

7⃣عن مسمع عن أبی عبداللَّه عن أَمِیرالْمُؤْمِنِینَ أَنَّهُ نَهَی أَنْ یَدْخُلَ الرَّجُلُ الْمَاءَ إِلَّا بِمِئْزَرٍ

📚Tahdhib, vol. 1, p. 373

Imam Sadiq (peace be upon him) said: Amir al-Mu'minin (peace be upon him) prohibited entering water except with a loincloth!

8⃣عن جعفر بن محمد عن آبَائِهِ فی وَصِیَّةِ النَّبِیِّ لِعَلِیٍّ قال: و کَرِهَ اللَّهُ لِأُمَّتِیَ الْغُسْلَ تَحْتَ السَّمَاءِ إِلَّا بِمِئْزَرٍ و کَرِهَ دُخُولَ الْأَنْهَارِ إِلَّا بِمِئْزَرٍ فَإِنَّ فِیهَا سُکَّاناً مِنَ الْمَلَائِکَة

📚Fiqh, vol. 4, p. 357

The Messenger of Allah (peace be upon him and his family) in his will to Amir al-Mu'minin (peace be upon him) said: Allah dislikes for my ummah to bathe under the sky except with a loincloth, and to enter rivers except with a loincloth, because there are inhabitants among the angels in them!

9⃣عن جعفر قال: قال النَّبِیُّ إِذَا انْکَشَفَ أَحَدُکُمْ لِبَوْلٍ أَوْ غَیْرِ ذَلِکَ فَلْیَقُلْ بِسْمِ اللَّهِ فَإِنَّ الشَّیْطَانَ یَغُضُّ بَصَرَهُ

📚Tahdhib, vol. 1, p. 353

Imam Sadiq (peace be upon him) said: When one of you removes his clothes to urinate or otherwise, he should say Bismillah, for then Satan closes his eyes!

0⃣1⃣عن إسحاق بن عمار عن أَبِی عبداللَّه فِی الرَّجُلِ یَنْظُرُ إِلَی امْرَأَتِهِ وَ هِیَ عُرْیَانَةٌ قَالَ لَا بَأْسَ بِذَلِکَ و هَلِ اللَّذَّةُ إِلَّا ذَلِک

📚Kafi, vol. 5, p. 497

Imam Sadiq (peace be upon him) regarding a man looking at his naked wife said: There is no problem! Is pleasure anything but this?!

✅In the above narrations, it is observed that complete nudity during the day and night, even during intercourse, and entering water without a loincloth is prohibited and causes Satan to look at the person and covet him, although exceptions are made when there are no onlookers.

✅However, the important point is that if a person needs to or wants to take advantage of exceptions for urination or otherwise, he should say Bismillah so that Satan closes his eyes and he remains safe from the dangerous consequences of Satan's coveting.

اللَّهُمَّ صَلِّ عَلَی مُحَمَّدٍ وَ آلِ مُحَمَّدٍ وَ عَجِّلْ لِوَلِیِّکَ الْفَرَجَ و الْعَافِیَةَ و النَّصْر

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