Jami` at-Tirmidhi 321
جامع الترمذي#321Sahihحَدَّثَنَا مَحْمُودُ بْنُ غَيْلاَنَ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنِ الزُّهْرِيِّ، عَنْ سَالِمٍ، عَنِ ابْنِ عُمَرَ، قَالَ كُنَّا نَنَامُ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي الْمَسْجِدِ وَنَحْنُ شَبَابٌ . قَالَ أَبُو عِيسَى حَدِيثُ ابْنِ عُمَرَ حَدِيثٌ حَسَنٌ صَحِيحٌ . وَقَدْ رَخَّصَ قَوْمٌ مِنْ أَهْلِ الْعِلْمِ فِي النَّوْمِ فِي الْمَسْجِدِ . قَالَ ابْنُ عَبَّاسٍ لاَ يَتَّخِذُهُ مَبِيتًا وَلاَ مَقِيلاً . وَقَوْمٌ مِنْ أَهْلِ الْعِلْمِ ذَهَبُوا إِلَى قَوْلِ ابْنِ عَبَّاسٍ .
Ibn Umar narrated:"We would sleep in the Masjid during the time of Allah's Messenger and we were young men
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 2:173