Ridda wars
Qa'qa ibn Amr converted along with his tribe, in the Year of the delegations, 631. But, for a brief period, he and other Tamim joined the force of false prophetess Sajah bint al-Harith before she was subdued during Ridda wars later on he carried successful military career under Khalid bin Walid suppressing another false prophet Tulayha in the Battle of Buzakha. after the Ridda wars has been ended he continued to follow Khalid's campaign to Syria and Iraq.