Sahih al-Bukhari 5301
صحيح البخاري#5301Sahihحَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا سُفْيَانُ، قَالَ أَبُو حَازِمٍ سَمِعْتُهُ مِنْ، سَهْلِ بْنِ سَعْدٍ السَّاعِدِيِّ صَاحِبِ رَسُولِ اللَّهِ صلى الله عليه وسلم يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " بُعِثْتُ أَنَا وَالسَّاعَةَ كَهَذِهِ مِنْ هَذِهِ أَوْ كَهَاتَيْنِ ". وَقَرَنَ بَيْنَ السَّبَّابَةِ وَالْوُسْطَى.
Narrated Sahl bin Sa`d As-Sa`idi:(a companion of Allah's Messenger (ﷺ)) Allah's Messenger (ﷺ), holding out his middle and index fingers, said, "My advent and the Hour's are like this (or like these)," namely, the period between his era and the Hour is like the distance between those two fingers, i.e., very short
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: 68:50