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."  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ مَنْ أَحَبَّ أَنْ يُبْسَطَ لَهُ فِي رِزْقِهِ وَأَنْ يُنْسَأَ لَهُ فِي أَثَرِهِ فَلْيَصِلْ رَحِمَهُ  

Abu Hurayra heard that the Messenger of Allah, may Allah bless him and grant him peace, say, "Anyone who wants to have his provision expanded and his term of life lengthened should maintain ties of kinship."  

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ مَنْ سَرَّهُ أَنْ يُبْسَطَ لَهُ فِي رِزْقِهِ وَأَنْ يُنْسَأَ لَهُ فِي أَثَرِهِ فَلْيَصِلْ رَحِمَهُ