It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said: "Whoever makes begging a habit will meet Allah in such a state that there will not be a single piece of flesh on his face."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 4638