Musnad Abu Ya'la al-Mawsili 117:222

Al-Jarrah ibn Mukhallad narrated to us, Salim ibn Nuh narrated to us, Suhayl narrated to us, Thabit narrated from Anas, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Shall I not inform you of the best among you?" They said: "Yes, O Messenger of Allah." He said: "The best among you are those of you with the longest lives, if they act righteously."