Sahih al-Bukhari 116
صحيح البخاري#116Sahihحَدَّثَنَا سَعِيدُ بْنُ عُفَيْرٍ، قَالَ حَدَّثَنِي اللَّيْثُ، قَالَ حَدَّثَنِي عَبْدُ الرَّحْمَنِ بْنُ خَالِدٍ، عَنِ ابْنِ شِهَابٍ، عَنْ سَالِمٍ، وَأَبِي، بَكْرِ بْنِ سُلَيْمَانَ بْنِ أَبِي حَثْمَةَ أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، قَالَ صَلَّى بِنَا النَّبِيُّ صلى الله عليه وسلم الْعِشَاءَ فِي آخِرِ حَيَاتِهِ، فَلَمَّا سَلَّمَ قَامَ فَقَالَ " أَرَأَيْتَكُمْ لَيْلَتَكُمْ هَذِهِ، فَإِنَّ رَأْسَ مِائَةِ سَنَةٍ مِنْهَا لاَ يَبْقَى مِمَّنْ هُوَ عَلَى ظَهْرِ الأَرْضِ أَحَدٌ ".
Narrated `Abdullah bin `Umar:Once the Prophet (ﷺ) led us in the `Isha' prayer during the last days of his life and after finishing it (the prayer) (with Taslim) he said: "Do you realize (the importance of) this night?" Nobody present on the surface of the earth tonight will be living after the completion of one hundred years from this night
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:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 3:58