Hashim ibn Utbah bin Abi Waqas was a Muslim

Muslim

A Muslim, also spelled Moslem, is an adherent of Islam, a monotheistic, Abrahamic religion based on the Quran, which Muslims consider the verbatim word of God as revealed to prophet Muhammad. "Muslim" is the Arabic term for "submitter" .Muslims believe that God is one and incomparable...

 army

Army

An army An army An army (from Latin arma "arms, weapons" via Old French armée, "armed" (feminine), in the broadest sense, is the land-based military of a nation or state. It may also include other branches of the military such as the air force via means of aviation corps...

 commander

Commander

Commander is a naval rank which is also sometimes used as a military title depending on the individual customs of a given military service. Commander is also used as a rank or title in some organizations outside of the armed forces, particularly in police and law enforcement.-Commander as a naval...

. He was Sa`d ibn Abi Waqqas

Sa`d ibn Abi Waqqas

Saad ibn Abī Waqqās was an early convert to Islam in 610-11 and one of the important companions of the Islamic prophet Muhammad. Sa'd was the seventeenth person to embrace Islam at the age of seventeen...

' nephew through his father, and was a Sahaba

Sahaba

In Islam, the ' were the companions, disciples, scribes and family of the Islamic prophet...

 (a companions of the Prophet Mohammed). Hashim participated in the Ridda wars

Ridda wars

The Ridda wars , also known as the Wars of Apostasy, were a series of military campaigns against the rebellion of several Arabian tribes launched by the Caliph Abu Bakr during 632 and 633 AD, after prophet Muhammad died....

 against the rebellious Arabic tribe

Tribe

A tribe, viewed historically or developmentally, consists of a social group existing before the development of, or outside of, states.Many anthropologists use the term tribal society to refer to societies organized largely on the basis of kinship, especially corporate descent groups .Some theorists...

s following the death of Prophet Mohammad in order to return them to Islam. He fought the Byzantines

Byzantine Empire

The Byzantine Empire was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the Roman Empire or Romania to its inhabitants and neighbours, the Empire was the direct continuation of the Ancient Roman State...

 in Battle of Yarmouk

Battle of Yarmouk

The Battle of Yarmouk was a major battle between the Muslim Arab forces of the Rashidun Caliphate and the armies of the East Roman-Byzantine Empire. The battle consisted of a series of engagements that lasted for six days in August 636, near the Yarmouk River, along what is today the border...

 under the command of Khalid ibn al-Walid

Khalid ibn al-Walid

Khālid ibn al-Walīd also known as Sayf Allāh al-Maslūl , was a companion of the Islamic prophet Muhammad. He is noted for his military tactics and prowess, commanding the forces of Medina and those of his immediate successors of the Rashidun Caliphate; Abu Bakr and Umar...

. He played a vital role in the Battle of al-Qādisiyyah

Battle of al-Qadisiyyah

The Battle of al-Qādisiyyah was fought in 636; it was the decisive engagement between the Arab muslim army and the Sassanid Persian army during the first period of Muslim expansion. It resulted in the Islamic conquest of Persia, and was key to the conquest of Iraq...

 that led to the conquest of Al-Mada'in

Al-Mada'in

Al-Mada'in, meaning "The cities", is the name given to an ancient metropolis formed by Ctesiphon and Seleucia on opposite sides of the Tigris River in present-day Iraq...

by Muslims.