Sa'd, with his soldiers, set up an ambush in the valley of Kharrar on the road to Mecca and waited to raid a returning Meccan caravan from Syria. But the caravan had already passed and the Muslims returned to Medina without a fight.

The fourth raid, known as the invasion of Waddan, was the first offensive in which Muhammad took part personally with 70, mostly Muhajir, troops. It is said that twelve months after moving to Medina, Muhammad himself led a caravan