Sahih al-Bukhari 1902
صحيح البخاري#1902Sahihحَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا إِبْرَاهِيمُ بْنُ سَعْدٍ، أَخْبَرَنَا ابْنُ شِهَابٍ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ عُتْبَةَ، أَنَّ ابْنَ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ كَانَ النَّبِيُّ صلى الله عليه وسلم أَجْوَدَ النَّاسِ بِالْخَيْرِ، وَكَانَ أَجْوَدُ مَا يَكُونُ فِي رَمَضَانَ، حِينَ يَلْقَاهُ جِبْرِيلُ، وَكَانَ جِبْرِيلُ ـ عَلَيْهِ السَّلاَمُ ـ يَلْقَاهُ كُلَّ لَيْلَةٍ فِي رَمَضَانَ حَتَّى يَنْسَلِخَ، يَعْرِضُ عَلَيْهِ النَّبِيُّ صلى الله عليه وسلم الْقُرْآنَ، فَإِذَا لَقِيَهُ جِبْرِيلُ ـ عَلَيْهِ السَّلاَمُ ـ كَانَ أَجْوَدَ بِالْخَيْرِ مِنَ الرِّيحِ الْمُرْسَلَةِ.
Narrated Ibn `Abbas:The Prophet (ﷺ) was the most generous amongst the people, and he used to be more so in the month of Ramadan when Gabriel visited him, and Gabriel used to meet him on every night of Ramadan till the end of the month. The Prophet (ﷺ) used to recite the Holy Qur'an to Gabriel, and when Gabriel met him, he used to be more generous than a fast wind (which causes rain and welfare)
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: 30:12