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كتاب الزكاة
24  
Obligatory Charity Tax (Zakat)
(53)
Chapter: 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"
(53)
بَابُ قَوْلِ اللَّهِ تَعَالَى: {لاَ يَسْأَلُونَ النَّاسَ إِلْحَافًا} وَكَمِ الْغِنَى
Sahih al-Bukhari 1476

Narrated Abu Huraira:

The Prophet (ﷺ) said, "The poor person is not the one who asks a morsel or two (of meals) from the others, but the poor is the one who has nothing and is ashamed to beg from others."

حَدَّثَنَا حَجَّاجُ بْنُ مِنْهَالٍ، حَدَّثَنَا شُعْبَةُ، أَخْبَرَنِي مُحَمَّدُ بْنُ زِيَادٍ، قَالَ سَمِعْتُ أَبَا هُرَيْرَةَ ـ رضى الله عنه ـ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏ "‏ لَيْسَ الْمِسْكِينُ الَّذِي تَرُدُّهُ الأُكْلَةُ وَالأُكْلَتَانِ، وَلَكِنِ الْمِسْكِينُ الَّذِي لَيْسَ لَهُ غِنًى وَيَسْتَحْيِي أَوْ لاَ يَسْأَلُ النَّاسَ إِلْحَافًا ‏"‏‏.‏
Reference : Sahih al-Bukhari 1476
In-book reference : Book 24, Hadith 77
USC-MSA web (English) reference : Vol. 2, Book 24, Hadith 554
  (deprecated numbering scheme)