Musannaf Ibn Abi Shaybah 36166 — Book of History

Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: Revelation was sent down upon the Messenger of Allah (peace and blessings be upon him) at the age of forty. He (peace and blessings be upon him) stayed in Makkah for thirteen years and in Madinah for ten years, and he passed away at the age of sixty-three.