Sahih al-Bukhari 440

Arabic

حَدَّثَنَا مُسَدَّدٌ، قَالَ حَدَّثَنَا يَحْيَى، عَنْ عُبَيْدِ اللَّهِ، قَالَ حَدَّثَنِي نَافِعٌ، قَالَ أَخْبَرَنِي عَبْدُ اللَّهِ، أَنَّهُ كَانَ يَنَامُ وَهْوَ شَابٌّ أَعْزَبُ لاَ أَهْلَ لَهُ فِي مَسْجِدِ النَّبِيِّ صلى الله عليه وسلم‏.‏

English translation

Narrated Nafi`:`Abdullah bin `Umar said: I used to sleep in the mosque of the Prophet (ﷺ) while I was young and unmarried

Reference: Sahih al-Bukhari 440, Book of Prayers (Salat). English translation by Dr. Muhammad Muhsin Khan.