Sahih al-Bukhari 367
Sahih al-Bukhari · Book 8: Prayers (Salat) · What may be used to cover the private parts of the body
Narrated Abu Sa`id Al-Khudri:
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ ، قَالَ حَدَّثَنَا لَيْثٌ ، عَنِ ابْنِ شِهَابٍ ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ عُتْبَةَ ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ ، أَنَّهُ قَالَ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم عَنِ اشْتِمَالِ الصَّمَّاءِ وَأَنْ يَحْتَبِيَ الرَّجُلُ فِي ثَوْبٍ وَاحِدٍ، لَيْسَ عَلَى فَرْجِهِ مِنْهُ شَىْءٌ.
Allah's Messenger (ﷺ) forbade Ishtimal-As-Samma' (wrapping one's body with a garment so that one cannot raise its end or take one's hand out of it). He also forbade Al-Ihtiba' (sitting on buttocks with knees close to `Abdomen and feet apart with the hands circling the knees) while wrapping oneself with a single garment, without having a part of it over the private parts.