The Battle of the Trench, also known as the Battle of Khandaq and the Battle of the Confederates, was part of the conflict between the Muslims and the Quraysh. The Quraysh advanced towards the Muslims, who defended themselves in Medina by digging a trench around their settlement at the suggestion of Salman the Persian. The battle took place in 627 and lasted around two weeks, resulting in five to six casualties reported by the Muslim, and three casualties amongst the Quraysh.