Amr ibn al-As in the context of "Muslim conquest of Egypt"

The Arab conquest of Egypt, led by the army of Amr ibn al-As, under the Rashidun Caliphate took place between 639 and 642 AD. It ended the Roman period in Egypt which began in 30 BC and lasted for seven centuries, and more broadly, the Greco-Roman period which lasted for about a millennium.

Prior to the conquest, Byzantine rule in the country had been shaken, as Egypt had been conquered and occupied by the Sasanian Empire for a decade between 618–629, before being reconquered by the Byzantines under emperor Heraclius. The Caliphate took advantage of Byzantines' exhaustion to invade Egypt.

Mu'awiya I (c. 597, 603 or 605–April 680) was the founder and first caliph of the Umayyad Caliphate, ruling from 661 until his death. He became caliph less than thirty years after the death of the Islamic prophet Muhammad and immediately after the four Rashidun ('rightly-guided') caliphs. Unlike his predecessors, who had been close, early companions of Muhammad, Mu'awiya was a relatively late follower of Muhammad.

Mu'awiya and his father Abu Sufyan had opposed Muhammad, their distant Qurayshite kinsman and later Mu'awiya's brother-in-law, until Muhammad captured Mecca in 630. Afterward, Mu'awiya became one of Muhammad's scribes. He was appointed by Caliph Abu Bakr (r. 632–634) as a deputy commander in the conquest of Syria. He moved up the ranks through Umar's caliphate (r. 634–644) until becoming governor of Syria during the reign of his Umayyad kinsman, Caliph Uthman (r. 644–656). He allied with the province's powerful Banu Kalb tribe, developed the defenses of its coastal cities, and directed the war effort against the Byzantine Empire, including the first Muslim naval campaigns. In response to Uthman's assassination in 656, Mu'awiya took up the cause of avenging the murdered caliph and opposed the election of Ali. During the First Muslim Civil War, the two led their armies to a stalemate at the Battle of Siffin in 657, prompting an abortive series of arbitration talks to settle the dispute. Afterward, Mu'awiya gained recognition as caliph by his Syrian supporters and his ally Amr ibn al-As, who conquered Egypt from Ali's governor in 658. Following the assassination of Ali in 661, Mu'awiya compelled Ali's son and successor Hasan to abdicate and Mu'awiya's suzerainty was acknowledged throughout the Caliphate.

The Rashidun army (Arabic: جيش الراشدين) was the core of the Rashidun Caliphate's armed forces during the early Muslim conquests in the 7th century. The army is reported to have maintained a high level of discipline, strategic prowess and organization, granting them successive victories in their various campaigns.

In its time, the Rashidun army was a very powerful and effective force. The three most successful generals of the army were Khalid ibn al-Walid, who conquered Persian Mesopotamia and the Roman Levant, Abu Ubaidah ibn al-Jarrah, who also conquered parts of the Roman Levant, and Amr ibn al-As, who conquered Roman Egypt. The army was a key component in the Rashidun Caliphate's territorial expansion and served as a medium for the early spread of Islam into the territories it conquered.

The Amr ibn al-As Mosque (Arabic: مَسْجِد عَمْرِو بْنِ الْعَاصِ, romanized: Masjid ʿAmr ibn al-ʿĀṣ) is a mosque, located in the Fustat neighbourhood of Old Cairo, Egypt. Named in honour of the Arab Muslim commander Amr ibn al-As, the mosque was built in c. 642 CE as the centre of the newly founded capital of Egypt, Fustat. The original structure was the first mosque built in Egypt and one of the first in Africa. For 600 years, the mosque was also an important centre of Islamic learning until it was replaced by al-Muizz's Al-Azhar Mosque in Islamic Cairo. Through the twentieth century, it was the fourth largest mosque in the Islamic world.

The mosque's location was the site of the former tent of Amr ibn al-As. One corner of the mosque contained a room related in some significant way to his son, Abd Allah ibn Amr ibn al-As. Due to extensive reconstruction over the centuries nothing of the original building remained, but the rebuilt mosque is a prominent landmark and can be seen in what today is known as Old Cairo. It is an active mosque with a devout congregation, and when prayers are not taking place, it is also open to visitors and tourists.

Abu al-A'war Amr ibn Sufyan ibn Abd Shams al-Sulami (Arabic: أبو الأعور عمرو بن سُفيان بن عبد شمس السلمي, romanized: ʾAbū al-ʾAʿwar ʿAmr ibn Sufyān ibn ʿAbd Shams al-Sulamī), identified with the Abulathar or Aboubacharos (Greek: Ἀβουλαθάρ, Ἀβουβάχαρος) of the Byzantine sources (fl. 629–669), was an Arab admiral and general, serving in the armies of the Rashidun caliphs Abu Bakr (r. 632–634), Umar (r. 634–644) and Uthman (r. 644–656) rejecting the fourth Rashidun caliph Ali (r. 656–661), instead serving Umayyad caliph Mu'awiya I (r. 661–680).

He was one of the last prominent members of the Banu Sulaym tribe to convert to Islam, and fought against Muhammad at the Battle of Hunayn in 630. After becoming a Muslim, he took part in the conquest of Syria in the 630s and fought at the Yarmuk. Later, he commanded the Arab navy during the campaigns against the Byzantines in the eastern Mediterranean, including the decisive Muslim victory at the Battle of the Masts in 654. His army was also allegedly responsible for the destruction of the colossus of Rhodes. From the First Fitna until his disappearance from the historical record in the 660s, Abu al-A'war served Mu'awiya in a number of capacities, including as a commander and negotiator at the Battle of Siffin, an operative of Amr ibn al-As in Egypt, a tax administrator in Palestine and the governor of Jordan; he had held the latter post since the reign of Uthman.