Sahih al-Bukhari 1326
صحيح البخاري#1326Sahihحَدَّثَنَا يَعْقُوبُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا يَحْيَى بْنُ أَبِي بُكَيْرٍ، حَدَّثَنَا زَائِدَةُ، حَدَّثَنَا أَبُو إِسْحَاقَ الشَّيْبَانِيُّ، عَنْ عَامِرٍ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ أَتَى رَسُولُ اللَّهِ صلى الله عليه وسلم قَبْرًا، فَقَالُوا هَذَا دُفِنَ، أَوْ دُفِنَتِ الْبَارِحَةَ. قَالَ ابْنُ عَبَّاسٍ ـ رضى الله عنهما ـ فَصَفَّنَا خَلْفَهُ ثُمَّ صَلَّى عَلَيْهَا.
Narrated 'Amir:Ibn `Abbas (who was at that time a boy) said, "Allah's Messenger (ﷺ) came to a grave and the people said, 'He or she was buried yesterday.' " Ibn `Abbas added, "We aligned behind the Prophet (ﷺ) and he led the funeral prayer of the deceased
Scholarly Authentication
The label above is the grade most of these scholars gave, each scholar counted once — 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. When they judged only its chain of narrators (“Isnaad”), the label says “Sound chain”. 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: 23:82