During Hajj of the year 642 Umar decided to reappoint Khalid to the army services, he most probably intended to have Khalid's services for the invasion of mainland Persia, like Caliph Abu Bakr did during his first foreign expedition, the conquest of Iraq by using Khalid as a guaranteed victor for Persian front to boost up moral of Muslims for further such expeditions, his abilities and military prowess could also be used this time as a sure victory moreover his presence could also boost up the morale of Muslim army invading Persia and his formidable reputation as a psychological weapon against Persians. Umar reached Madinah after Hajj only to receive the news of Khalid's death that broke like a storm over Medinah. The women took to the streets, led by the women of the Banu Makhzum (Khalid's tribe), wailing and beating their chests.