Jami` at-Tirmidhi 465
جامع الترمذي#465Sahihحَدَّثَنَا مَحْمُودُ بْنُ غَيْلاَنَ، حَدَّثَنَا وَكِيعٌ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ زَيْدِ بْنِ أَسْلَمَ، عَنْ أَبِيهِ، عَنْ عَطَاءِ بْنِ يَسَارٍ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ نَامَ عَنِ الْوِتْرِ أَوْ نَسِيَهُ فَلْيُصَلِّ إِذَا ذَكَرَ وَإِذَا اسْتَيْقَظَ " .
Abu Sa'eed Al-Khudri narrated that :Allah's Messenger said: "Whoever sleeps past Al-Witr or forgets it, then let him pray it when he remembers it or when he awakens
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: 3:13