The Saudi conquest of Hail, also known as the Third SaudiâÂÂRashidi War or the Fall of Hail, was a conflict in which the Nejdi forces and allied Ikhwan tribesmen fought against the Emirate of Jabal Shammar under its final Rashidi ruler, Muhammad bin Talal. On 2 November 1921, the remaining Rashidi resistance collapsed, and the ruler of Jabal Shammar surrendered to the Nejdi forces.
Following the surrender, Ibn Saud imprisoned Muhammad bin Talal and compelled him to divorce one of his wives, Noura bint Sibhan, whom Ibn Saud subsequently married. Ibn Saud later divorced Noura and went on to marry Jawaher, a daughter of Muhammad from another of his wives.
The Emirate of Jabal Shammar had its capital in the city of Hail, and was therefore also referred to as the "Emirate of Hail". TheàSaudi conquest of Hail is sometimes incorrectly identified as the Second SaudiâÂÂRashidi War.