Language:
كتاب الأدب
78  
Good Manners and Form (Al-Adab)
(12)
Chapter: Whoever was made wealthy because of keeping good relations with his kith and kin
(12)
باب مَنْ بُسِطَ لَهُ فِي الرِّزْقِ بِصِلَةِ الرَّحِمِ
Sahih al-Bukhari 5985

Narrated Abu Huraira:

I heard Allah's Messenger (ﷺ) saying, "Who ever is pleased that he be granted more wealth and that his lease of life be pro longed, then he should keep good relations with his Kith and kin."

حَدَّثَنِي إِبْرَاهِيمُ بْنُ الْمُنْذِرِ، حَدَّثَنَا مُحَمَّدُ بْنُ مَعْنٍ، قَالَ حَدَّثَنِي أَبِي، عَنْ سَعِيدِ بْنِ أَبِي سَعِيدٍ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏ "‏ مَنْ سَرَّهُ أَنْ يُبْسَطَ لَهُ فِي رِزْقِهِ، وَأَنْ يُنْسَأَ لَهُ فِي أَثَرِهِ، فَلْيَصِلْ رَحِمَهُ ‏"‏‏.‏
Reference : Sahih al-Bukhari 5985
In-book reference : Book 78, Hadith 16
USC-MSA web (English) reference : Vol. 8, Book 73, Hadith 14
  (deprecated numbering scheme)