Musnad Ahmad 32:645

Husayn ibn Muhammad narrated to us, Muslim—meaning Ibn Khalid—narrated to us, from Abdullah ibn Abd al-Rahman ibn Abi Husayn al-Makki al-Qurashi, from Anas ibn Malik, that the Prophet, peace and blessings of Allah be upon him, said: "Whoever is pleased that his provision be increased for him by Allah, and that his lifespan be extended, let him maintain his ties of kinship."