Al-Adab Al-Mufrad, Book 2, Hadith 10 (In-Book) ⓘ
Anas ibn Malik reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "Anyone who wants to have his provision expanded and his term of life prolonged should maintain ties of kinship."
حَدَّثَنَا عَبْدُ اللهِ بْنُ صَالِحٍ قَالَ: حَدَّثَنِي اللَّيْثُ قَالَ: حَدَّثَنِي عَقِيلٌ، عَنِ ابْنِ شِهَابٍ قَالَ: أَخْبَرَنِي أَنَسُ بْنُ مَالِكٍ، أَنَّ رَسُولَ اللهِ صلى الله عليه وسلم قَالَ: مَنْ أَحَبَّ أَنْ يُبْسَطَ لَهُ فِي رِزْقِهِ، وَأَنْ يُنْسَأَ لَهُ فِي أَثَرِهِ، فَلْيَصِلْ رَحِمَهُ.
also referenced under: Hadith 56 (Reference) & Book 2, Hadith 56 (English)