Musnad Abu Ya'la al-Mawsili 153:167

Ishaq ibn Abi Isra'il narrated to us, he said: Abd al-Razzaq narrated to us, Ma'mar informed us, from Abdullah ibn Muslim, from Hamzah ibn Abdullah ibn Umar, from his father, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Begging will continue to be with a man until he meets Allah, and there is no flesh on his face."