Sahih Al Bukhari – Book of Virtues Of The Qur'an
Volumn 006, Book 061, Hadith Number 519.
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Narated By Ibn 'Abbas RA: The Prophet PBUH was the most generous person, and he used to become more so (generous) particularly in the month of Ramadan because Gabriel used to meet him every night of the month of Ramadan till it elapsed. Allah's Apostle PBUH used to recite the Qur'an for him. When Gabriel met him, he used to become more generous than the fast wind in doing good.