Hadhramaut
The last of the great revolts of the apostasy was that of the powerful tribe of Kinda, which inhabited the region of Najran, Hadhramaut, and eastern Yemen. They did not break into revolt until January 633. Ziyad bin Lubaid, Muslim governor of Hadhramaut, operated against them and raided Riyaz, after which the whole of the Kinda broke into revolt under Ash'as bin Qais and prepared for war. However, the strength of the two forces, i.e. apostate and Muslim, was so well balanced that neither side felt able to start serious hostilities. Ziyad waited for reinforcements before attacking the rebels. Reinforcements were on the way. Muhajir bin Abi Umayyah, the last of the corps commanders to be despatched by Abu Bakr, defeated some rebel tribes in Najran, south-eastern Arabia, and was directed by Abu Bakr to march to Hadhramaut and join Ziyad against the Kinda. The Caliph also instructed Ikrimah, who was at Abyan, to join Ziyad and Muhajir's forces. In late January 633 the forces of Muhajir and Ziyad combined at Zafar, capital of Hadhramaut, under the overall command of the former, and defeated Ash'as, who retreated to the fortified town of Nujair. Just after this battle the corps of Ikrimah also arrived. The three Muslim corps, under the overall command of Muhajir, advanced on Nujair and laid siege to the fortified city. Nujair was captured some time in mid-February 633. With the defeat of the Kinda at Nujair the last of the great apostate movements collapsed. Arabia was safe for Islam. The Campaign of the Apostasy was fought and completed during the 11th year of the Hijra. The year 12 Hijri dawned, on March 18, 633, with Arabia united under the central authority of the Caliph at Medina. This campaign was Abu Bakr's greatest political and military triumph.
Read more about this topic: Ridda Wars