Musannaf Ibn Abi Shaybah 39303 — Reports on how old the Prophet

It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that revelation came down upon the Prophet (peace and blessings be upon him) when he (peace and blessings be upon him) was forty years of age. Then he (peace and blessings be upon him) stayed in Makkah for thirteen years, and he (peace and blessings be upon him) remained in Madinah for ten years. Then he (peace and blessings be upon him) passed away, and his (peace and blessings be upon him) blessed age was sixty-three years.