ما هو ملخص سيرة وحياة وجهاد ووفاة السيد الحسن رضي الله عنه؟

Al-Hasan ibn Ali ibn Abi Talib was born in mid-Ramadan in the third year of the Hijra. He had fifteen sons and eight daughters. Muslims pledged allegiance to him as Caliph after the death of his father. He performed Hajj twenty-five times on foot. He relinquished the Caliphate to Mu'awiyah, and that year was named the Year of Unity (Aam al-Jama'ah), fulfilling the Prophet's (peace be upon him) saying: "Indeed, this son of mine is a master, and perhaps Allah will bring reconciliation between two factions of Muslims through him." Al-Hasan passed away after an illness that lasted forty days, in Rabīʿ al-Awwal of the year fifty of the Hijra, and was buried in Al-Baqi'.