(7) باب أَجْوَدُ مَا كَانَ النَّبِيُّ صلى الله عليه وسلم يَكُونُ فِي رَمَضَانَ
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).
Reference: Sahih al-Bukhari 1902
In-book reference: Book 30, Hadith 12
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 31, Hadith 126