Musnad Abu Ya'la al-Mawsili 54:12

Abu Hammam narrated to us, Ibn Wahb narrated to us, Sa'id bin Abi Ayyub narrated to me, from Zabban bin Fa'id, from Sahl bin Mu'adh bin Anas, from his father, that the Messenger of Allah (may Allah bless him and grant him peace) said: "Whoever is dutiful to his parents, glad tidings to him; Allah will increase his lifespan."