I said: Messenger of Allah, from whom should we conceal our private parts and to whom can we show? He replied: conceal your private parts except from your wife and from whom your right hands possess (slave-girls). I then asked: Messenger of Allah, (what should we do), if the people are assembled together? He replied: If it is within your power that no one looks at it, then no one should look at it. I then asked: Messenger of Allah if one of us is alone, (what should he do)? He replied: Allah is more entitled than people that bashfulness should be shown to him. (Using translation from Abū Dāʾūd 4017)
"احْفظ عَوْرَتَك إلا من زوجتك أو ما ملكت يمينُك".
(زاد في الصغير: قيل: إذا كان القوم بعضُهم في بعض. قال: إن استطعت ألَّا تُريها أحدًا فلا يَرينَّها، قيل: وإن كان أحدنا خاليًا؟ قال: الله أحق أن يُسْتحيا منه من الناس.
(حم، عم، ك، هق.) .