Sahih al-Bukhari 2627
صحيح البخاري#2627Sahihحَدَّثَنَا آدَمُ، حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، قَالَ سَمِعْتُ أَنَسًا، يَقُولُ كَانَ فَزَعٌ بِالْمَدِينَةِ فَاسْتَعَارَ النَّبِيُّ صلى الله عليه وسلم فَرَسًا مِنْ أَبِي طَلْحَةَ يُقَالُ لَهُ الْمَنْدُوبُ، فَرَكِبَ فَلَمَّا رَجَعَ قَالَ " مَا رَأَيْنَا مِنْ شَىْءٍ، وَإِنْ وَجَدْنَاهُ لَبَحْرًا ".
Narrated Anas:Once the people of Medina were frightened, so the Prophet (ﷺ) borrowed a horse from Abu Talha called Al-Mandub, and rode it. When he came back he said, "We have not seen anything (to be afraid of), but the horse was very fast (having an energy as inexhaustible as the water of the sea)
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: 51:59