Battle of Banu al-Mustaliq (al-Muraysi')

The Prophet ﷺ learned that Banu al-Mustaliq, a branch of Khuza'ah, were preparing to attack Medina under their chief al-Harith ibn Abi Dirar. The Muslims struck first at al-Muraysi', a watering place, routing the tribe quickly with minimal casualties. Many captives were taken and later freed. The Prophet married Juwayriyah bint al-Harith, the chief's daughter, which led the companions to free all captives out of respect for the Prophet's new family connection, and the entire tribe accepted Islam.