Sahih al-Bukhari 3554
صحيح البخاري#3554SahihNarrated Ibn `Abbas:The Prophet (ﷺ) was the most generous of all the people, and he used to become more generous in Ramadan when Gabriel met him. Gabriel used to meet him every night during Ramadan to revise the Qur'an with him. Allah's Messenger (ﷺ) then used to be more generous than the fast wind
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 61:63