Ridda Wars
Aftermath
Aftermath
---------

[300px\|thumb\|[Rashidun Caliphate](/wiki/Rashidun_Caliphate "Rashidun Caliphate") during the caliphate of Abu Bakr](/wiki/File:Abubakr%27sreign.png "Abubakr'sreign.png")
With the collapse of the rebellions, [Abu Bakr](/wiki/Abu_Bakr "Abu Bakr") gained control of the entire [Arabian Peninsula](/wiki/Arabian_Peninsula "Arabian Peninsula"). He decided to expand the caliphate. It is unclear whether his intention was to mount a full\-scale expansion, or preemptive attacks to secure a buffer zone between the Islamic state and the powerful Sasanian and Byzantine empires. This set the stage for the [Islamic conquest of Persia](/wiki/Islamic_conquest_of_Persia "Islamic conquest of Persia").
Khalid was sent to [Persia](/wiki/Persia "Persia") with an army consisting of 18,000 volunteers, and conquered the richest province of Persia: [Iraq](/wiki/Asorestan "Asorestan"). Thereafter, Abu Bakr sent his armies to invade Roman Syria, an important province of the [Byzantine Empire](/wiki/Byzantine_Empire "Byzantine Empire").

### Third rebellion in Yemen

At some point during the rule of [Umar ibn al\-Khat'tab](/wiki/Umar_ibn_al-Khat%27tab "Umar ibn al-Khat'tab"), the second caliph, the people of Yemen revolted once again under the leadership of a man named Ghayth ibn Abd Yaghuth. The avowed aim of the rebels was to drive the Muslims out of Yemen by assassinating Fairuz and other key Muslim leaders. Fairuz somehow escaped and took shelter in the mountains in June or July 632\. For the next six months, Fairuz remained in his stronghold, during which time he was joined by thousands of Yemeni Muslims. When he felt strong enough, Fairuz marched to San'a and defeated Qays, who retreated with his remaining men northeast to Abyan, where they all surrendered and were subsequently pardoned by the caliph. On the other side, [Uthman ibn Abi al\-As](/wiki/Uthman_ibn_Abi_al-As "Uthman ibn Abi al-As") also dispatched a force from Ta'if against rebel clans from the tribes of Azd and [Bajila](/wiki/Bajila "Bajila") in Yemen. He later also contributed a twenty\-man force from the city under the command of his brother to assist Medina's war efforts in Yemen. Abu Bakr kept Uthman in his post as did his successor Caliph Umar


Why did the people of Yemen revolt again during Umar ibn al-Khat'tab's rule?