Sunan Ibn Majah, Book 9, Hadith 1996 (In-Book) ⓘ
It was narrated from 'Utbah bin 'Abd Sulamain: that the Messenger of Allah said: “When anyone of you has intercourse with his wife, let him cover himself and not be naked liked donkeys.”
حَدَّثَنَا إِسْحَاقُ بْنُ وَهْبٍ الْوَاسِطِيُّ، حَدَّثَنَا الْوَلِيدُ بْنُ الْقَاسِمِ الْهَمْدَانِيُّ، حَدَّثَنَا الأَحْوَصُ بْنُ حَكِيمٍ، عَنْ أَبِيهِ، وَرَاشِدِ بْنِ سَعْدٍ، وَعَبْدِ الأَعْلَى بْنِ عَدِيٍّ، عَنْ عُتْبَةَ بْنِ عَبْدٍ السُّلَمِيِّ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ " إِذَا أَتَى أَحَدُكُمْ أَهْلَهُ فَلْيَسْتَتِرْ وَلاَ يَتَجَرَّدْ تَجَرُّدَ الْعَيْرَيْنِ " .
also referenced under: Hadith 1921 (Reference) & Volume 3, Book 9, Hadith 1921 (DarusSalam)