Ibn 'Abbas (May Allah be pleased with them) reported:
The Messenger of Allah (ﷺ) was the most generous of the men; and he was the most generous during the month of Ramadan when Jibril visited him every night and recited the Qur'an to him. During this period, the generosity of Messenger of Allah (ﷺ) waxed faster than the rain bearing wind.[Al-Bukhari and Muslim].
App reference: Book 9, Hadith 232
Arabic/English book reference: Book 9, Hadith 1222