It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "The miskin (needy) is not these people who keep going round to people and are sent away by one or two morsels, or one date or two dates." The Companions (may Allah be pleased with them) asked: "O Prophet of Allah (peace and blessings be upon him)! Who then is the miskin?" He (peace and blessings be upon him) said: "The one who does not have enough wealth to suffice him, who is not recognised (as needy) so that sadaqah may be given to him, and who does not ask people for anything." The wording of Imam Malik's narration is: "and they do not stand up to beg from people."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الصدقات / 13147