Sahih al-Bukhari 1974
صحيح البخاري#1974Sahihحَدَّثَنَا إِسْحَاقُ، أَخْبَرَنَا هَارُونُ بْنُ إِسْمَاعِيلَ، حَدَّثَنَا عَلِيٌّ، حَدَّثَنَا يَحْيَى، قَالَ حَدَّثَنِي أَبُو سَلَمَةَ، قَالَ حَدَّثَنِي عَبْدُ اللَّهِ بْنُ عَمْرِو بْنِ الْعَاصِ ـ رضى الله عنهما ـ قَالَ دَخَلَ عَلَىَّ رَسُولُ اللَّهِ صلى الله عليه وسلم فَذَكَرَ الْحَدِيثَ يَعْنِي " إِنَّ لِزَوْرِكَ عَلَيْكَ حَقًّا، وَإِنَّ لِزَوْجِكَ عَلَيْكَ حَقًّا ". فَقُلْتُ وَمَا صَوْمُ دَاوُدَ قَالَ " نِصْفُ الدَّهْرِ ".
Narrated `Abdullah bin `Amr bin Al-`As:"Once Allah's Messenger (ﷺ) came to me," and then he narrated the whole narration, i.e. your guest has a right on you, and your wife has a right on you. I then asked about the fasting of David. The Prophet (ﷺ) replied, "Half of the year," (i.e. he used to fast on every alternate day)
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: 30:81