It is narrated from Hazrat Abu Saeed (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: Whoever asks from someone despite having the value of one uqiyah of silver with him, he is committing ilhaf (persistently begging).
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 11044
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد حسن .