Narrated Anas bin Malik RA, The Prophet ﷺ said:
مَنْ أَحَبَّ أَنْ يُبْسَطَ لَهُ فِي رِزْقِهِ، وَيُنْسَأَ لَهُ فِي أَثَرِهِ، فَلْيَصِلْ رَحِمَهُ
“Whoever loves that he be granted more wealth and that his lease of life be prolonged then he should keep good relations with his Kith and kin.”
Sahih al-Bukhari (5986)