Sahih al-Bukhari 4275
صحيح البخاري#4275Sahihحَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، حَدَّثَنَا اللَّيْثُ، قَالَ حَدَّثَنِي عُقَيْلٌ، عَنِ ابْنِ شِهَابٍ، قَالَ أَخْبَرَنِي عُبَيْدُ اللَّهِ بْنُ عَبْدِ اللَّهِ بْنِ عُتْبَةَ، أَنَّ ابْنَ عَبَّاسٍ، أَخْبَرَهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم غَزَا غَزْوَةَ الْفَتْحِ فِي رَمَضَانَ. قَالَ وَسَمِعْتُ ابْنَ الْمُسَيَّبِ يَقُولُ مِثْلَ ذَلِكَ. وَعَنْ عُبَيْدِ اللَّهِ أَنَّ ابْنَ عَبَّاسِ ـ رضى الله عنهما ـ قَالَ صَامَ رَسُولُ اللَّهِ صلى الله عليه وسلم حَتَّى إِذَا بَلَغَ الْكَدِيدَ ـ الْمَاءَ الَّذِي بَيْنَ قُدَيْدٍ وَعُسْفَانَ ـ أَفْطَرَ، فَلَمْ يَزَلْ مُفْطِرًا حَتَّى انْسَلَخَ الشَّهْرُ.
Narrated Ubaidullah bin `Abdullah bin `Utba:Ibn `Abbas said, Allah's Messenger (ﷺ) fought the Ghazwa (i.e. battles of Al-Fath during Ramadan." Narrated Az-Zuhri: Ibn Al-Musaiyab (also) said the same. Ibn `Abbas added, "The Prophet (ﷺ) fasted and when he reached Al-Kadid, a place where there is water between Qudaid and 'Usfan, he broke his fast and did not fast afterwards till the whole month had passed away
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: 64:309