On what date did XXX end?
Battle of al-Qādisiyyah
The Battle of al-Qādisiyyah (Arabic: معركة القادسيّة‎; transliteration, Ma'rakatu al-Qādisiyyah; Persian: نبرد قادسيه‎‎ transliteration Nabard-e Qadesiyeh; alternative spellings: Qadisiyya, Qadisiyyah, Kadisiya, Ghadesiyeh), fought in 636, is said to be a decisive engagement between the Arab Muslim army and the Sassanid Persian army during the first period of Muslim expansion.