Musnad Abu Ya'la al-Mawsili 42:132

Sulayman ibn Abd al-Jabbar Abu Ayyub narrated to us, Sahl ibn Amir narrated to us, Fudayl ibn Marzuq narrated to us, from Atiyyah, from Abu Sa’id, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "There will be in the end of time, upon the manifestation of life and a severance of time, an Imam who will be the most giving of people. A man will come to him, and he will scoop [wealth] for him into his garment. It will concern him as to who will accept that wealth as charity from him, between him and his family, due to the good that will befall the people."