Complex sentence: Al-Mahdi Ahmad bin al-Husayn (died 20 February 1258) was an imam of the Zaidi state in Yemen who ruled in the period 1248-1258 and was considered by some a sacred figure on account of his violent end in battle.
Split into simpler sentences: Al-Mahdi Ahmad bin al-Husayn (died 20 February 1258) was an imam of the Zaidi state in Yemen who ruled in the period 1248-1258. He was considered by some a sacred figure on account of his violent end in battle.