The Book of Purification and its Sunnah
1/113. Chapter:
What was narrated about being concealed when bathing
Sunan Ibn Majah
حَدَّثَنَا مُحَمَّدُ بْنُ عُبَيْدِ بْنِ ثَعْلَبَةَ الْحِمَّانِيُّ، حَدَّثَنَا عَبْدُ الْحَمِيدِ أَبُو يَحْيَى الْحِمَّانِيُّ، حَدَّثَنَا الْحَسَنُ بْنُ عُمَارَةَ، عَنِ الْمِنْهَالِ بْنِ عَمْرٍو، عَنْ أَبِي عُبَيْدَةَ، عَنْ عَبْدِ اللَّهِ بْنِ مَسْعُودٍ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " لاَ يَغْتَسِلَنَّ أَحَدُكُمْ بِأَرْضِ فَلاَةٍ وَلاَ فَوْقَ سَطْحٍ لاَ يُوَارِيهِ فَإِنْ لَمْ يَكُنْ يَرَى فَإِنَّهُ يُرَى " .
It was narrated that 'Abdullah bin Mas'ud said: "The Messenger of Allah said: 'No one of you should bathe in open land or on a roof where he is not concealed; even if he does not see anyone, he can still be seen.'"
Reference : Sunan Ibn Majah 615In-book reference : Book 1, Hadith 349English translation : Vol. 1, Book 1, Hadith 615