Ibn 'Abbas reported that Messenger of Allah ﷺ was the most generous of people in charity, but he was generous to the utmost in the month of Ramadan. Gabriel (peace be upon him) would meet him every year during the month of Ramadin until it ended, and Messenger of Allah ﷺ recited to him the Qur'an; and when Gabriel met him Messenger of Allah ﷺ was most generous in giving charity like the blowing wind. (Using translation from Muslim 2308a)
كَانَ رَسُولُ اللهِ ﷺ أَجْوَدَ النَّاسِ بِالْخَيْرِ وَكَانَ أَجْوَدَ مَا يَكُونُ فِي رَمَضَانَ حِينَ يَلْقَاهُ جِبْرِيلُ وَكَانَ يَلْقَاهُ جِبْرِيلُ كُلَّ لَيْلَةٍ فِي رَمَضَانَ حَتَّى يَنْسَلِخَ يَعْرِضُ عَلَيْهِ رَسُولُ اللهِ ﷺ الْقُرْآنَ فَإِذَا لَقِيَهُ جِبْرِيلُ كَانَ رَسُولُ اللهِ ﷺ أَجْوَدَ بِالْخَيْرِ مِنَ الرِّيحِ الْمُرْسَلَةِ