Musnad Abu Ya'la al-Mawsili 118:74

Kamil ibn Talhah narrated to us, Layth ibn Sa'd narrated to us, 'Uqayl narrated to us, from Ibn Shihab, that he heard Anas ibn Malik saying: I heard the Messenger of Allah (ﷺ) saying: "Whoever loves that his lifespan be extended for him and that his provision be expanded for him—I think he said: in his provision—then let him maintain his ties of kinship."