Sahih Al Bukhari Hadith Number 1479

Narrated Abu Huraira: Allah’s Messenger (peace be upon him) said, “The poor person is not the one who goes round the people and ask them for a mouthful or two (of meals) or a date or two but the poor is that who has not enough (money) to satisfy his needs and whose condition is not known to others, that others may give him something in charity, and who does not beg of people.”

24  Obligatory Charity Tax (Zakat)
Hadith number 1479
Volume no 2
Chapter: 53 (The Statement of Allah ‘Azza wa Jall: “… They do not beg people persistently. …” (2:273) And who may be considered to have enough to be content and abstain from begging)