I heard Messenger of Allah ﷺ saying, "whoever desires an expansion in his sustenance and age, should keep good relations with his Kith and kin."  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ مَنْ سَرَّهُ أَنْ يُبْسَطَ لَهُ رِزْقُهُ أَوْ يُنْسَأَ لَهُ فِي أَثَرِهِ فَلْيَصِلْ رَحِمَهُ