Musnad Abu Ya'la al-Mawsili 140:12

Abu Khaythama narrated to us, Makki ibn Ibrahim narrated to us, Hisham ibn Hassan narrated to us, from Yazid al-Raqashi, from Anas ibn Malik, that the Messenger of Allah (may Allah bless him and grant him peace) said: "Whoever is pleased by having his term delayed and his provision increased, let him maintain his ties of kinship."