Sahih al-Bukhari 4424
صحيح البخاري#4424Sahihحَدَّثَنَا إِسْحَاقُ، حَدَّثَنَا يَعْقُوبُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا أَبِي، عَنْ صَالِحٍ، عَنِ ابْنِ شِهَابٍ، قَالَ أَخْبَرَنِي عُبَيْدُ اللَّهِ بْنُ عَبْدِ اللَّهِ، أَنَّ ابْنَ عَبَّاسٍ، أَخْبَرَهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم بَعَثَ بِكِتَابِهِ إِلَى كِسْرَى مَعَ عَبْدِ اللَّهِ بْنِ حُذَافَةَ السَّهْمِيِّ، فَأَمَرَهُ أَنْ يَدْفَعَهُ إِلَى عَظِيمِ الْبَحْرَيْنِ، فَدَفَعَهُ عَظِيمُ الْبَحْرَيْنِ إِلَى كِسْرَى، فَلَمَّا قَرَأَهُ مَزَّقَهُ ـ فَحَسِبْتُ أَنَّ ابْنَ الْمُسَيَّبِ قَالَ ـ فَدَعَا عَلَيْهِمْ رَسُولُ اللَّهِ صلى الله عليه وسلم أَنْ يُمَزَّقُوا كُلَّ مُمَزَّقٍ.
Narrated Ibn `Abbas:Allah's Messenger (ﷺ) sent a letter to Khosrau with `Abdullah bin Hudhafa As-Sahmi and told him to hand it over to the governor of Al-Bahrain. The governor of Al-Bahrain handed it over to Khosrau, and when he read the latter, he tore it into pieces. (The sub-narrator added, "I think that Ibn Al-Musaiyab said, 'Allah's Apostle invoked (Allah) to tear them all (Khosrau and his companions) totally into pieces
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: 64:446