Musnad Abu Ya'la al-Mawsili 118:55

Muhammad ibn Yusuf al-Ghadidi, Abu Ja'far, narrated to us, saying: Abdullah ibn Wahb narrated to us, from Qurrah ibn Abd al-Rahman, from Ibn Shihab, from Anas ibn Malik, from the Messenger of Allah (may Allah bless him and grant him peace): He was made a prophet when he was forty years old. He remained in Makkah for ten years and in al-Madinah for ten years. He passed away when he was sixty years old, and there were not twenty white hairs on his head and beard.