Al-Aḥzāb (الأحزاب‎, "The Clans, The Coalition, The Combined Forces") is the 33rd chapter (sūrah) of the Qur'an with 73 verses (āyāt). The sūrah takes its name from the mention of the parties (al-aḥzāb), or confederates (an alliance among the Quraysh and other tribes), who fought the Muslims at the Battle of the Trench (5/627), also known as the Battle of the Parties and as the Siege of Madinah.