Sahih al-Bukhari 3951
صحيح البخاري#3951Sahihحَدَّثَنِي يَحْيَى بْنُ بُكَيْرٍ، حَدَّثَنَا اللَّيْثُ، عَنْ عُقَيْلٍ، عَنِ ابْنِ شِهَابٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ عَبْدِ اللَّهِ بْنِ كَعْبٍ، أَنَّ عَبْدَ اللَّهِ بْنَ كَعْبٍ، قَالَ سَمِعْتُ كَعْبَ بْنَ مَالِكٍ ـ رضى الله عنه ـ يَقُولُ لَمْ أَتَخَلَّفْ عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي غَزْوَةٍ غَزَاهَا إِلاَّ فِي غَزْوَةِ تَبُوكَ، غَيْرَ أَنِّي تَخَلَّفْتُ عَنْ غَزْوَةِ بَدْرٍ، وَلَمْ يُعَاتَبْ أَحَدٌ تَخَلَّفَ عَنْهَا، إِنَّمَا خَرَجَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُرِيدُ عِيرَ قُرَيْشٍ، حَتَّى جَمَعَ اللَّهُ بَيْنَهُمْ وَبَيْنَ عَدُوِّهِمْ عَلَى غَيْرِ مِيعَادٍ.
Narrated Ka`b bin Malik:I never failed to join Allah's Messenger (ﷺ) in any of his Ghazawat except in the Ghazwa of Tabuk. However, I did not take part in the Ghazwa of Badr, but none who failed to take part in it, was blamed, for Allah's Messenger (ﷺ) had gone out to meet the caravans of (Quraish, but Allah caused them (i.e. Muslims) to meet their enemy unexpectedly (with no previous intention)
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: 64:3