The Messenger of Allah ﷺ said, "Whoever wishes to have his provision expanded and his lifespan extended should maintain ties with his relatives."
حدثنا أحمد بن صالح ويعقوب بن كعب وهذا حديثه قالا حدثنا ابن وهب قال أخبرني يونس عن الزهري
قال رسول الله ﷺ من سره أن يبسط عليه في رزقه وينسأ في أثره فليصل رحمه
Reported by Muslim, Book of Righteousness and Maintaining Ties of Kinship, Chapter on Maintaining Ties of Kinship and the Prohibition of Severing Them, no. 2557, from the hadith of Abdullah bin Wahb, and Bukhari, Book of Business Transactions, Chapter on One Who Loves Having Provision Extended, no. 2067, from the hadith of Yunus bin Yazid, with the same chain.