كتاب البر والصلة والآداب
45  
The Book of Virtue, Enjoining Good Manners, and Joining of the Ties of Kinship
(6)
Chapter: Upholding Ties Of Kinship, And The Prohibition Of Severing Them
(6)
باب صِلَةِ الرَّحِمِ وَتَحْرِيمِ قَطِيعَتِهَا ‏‏
Sahih Muslim 2557 a

Anas b. Malik reported:

I heard Allah's Messenger (ﷺ) as saying: He who is desirous that his means of sustenance should be expanded for him or his age may be lengthened, should join the tie of relationship.
حَدَّثَنِي حَرْمَلَةُ بْنُ يَحْيَى التُّجِيبِيُّ، أَخْبَرَنَا ابْنُ وَهْبٍ، أَخْبَرَنِي يُونُسُ، عَنِ ابْنِ شِهَابٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏ "‏ مَنْ سَرَّهُ أَنْ يُبْسَطَ عَلَيْهِ رِزْقُهُ أَوْ يُنْسَأَ فِي أَثَرِهِ فَلْيَصِلْ رَحِمَهُ ‏"‏ ‏.‏
Reference : Sahih Muslim 2557a
In-book reference : Book 45, Hadith 23
USC-MSA web (English) reference : Book 32, Hadith 6202
  (deprecated numbering scheme)