Abd Allah ibn Abi Quhafa, commonly known by the kunyaAbu Bakr, was the first caliph, ruling from 632 until his death in 634. A close companion and father-in-law of Muhammad, Abu Bakr is referred to with the honorific title al-Ṣiddīq by Sunni Muslims.
The 630s decade ran from January 1, 630, to December 31, 639.
Umar ibn al-Khattab, also spelled Omar, was the second Rashidun caliph, ruling from August 634, when he succeeded Abu Bakr as the second caliph, until his assassination in 644. Umar was a senior companion and father-in-law of the Islamic prophet Muhammad. Muhammad described him and Abu Bakr, as the leaders of the elders of Paradise.
Banu Abd Shams refers to a clan within the Meccan tribe of Quraysh.
Usaamah ibn Zayd ibn Haritha al-Kalbi was an early Muslim and companion of the Islamic prophet Muhammad.
Ṭalḥa ibn ʿUbayd Allāh al-Taymī was a companion of the Islamic prophet Muhammad. In Sunni Islam, he is mostly known for being among al-ʿashara al-mubashshara. He played an important role in the Battle of Uhud and the Battle of the Camel, in which he died. According to Sunnis, he was given the title "the Generous" by Muhammad. However, Shia Muslims do not honour him.
Zayd ibn al-Khaṭṭāb was a companion of the Islamic prophet Muḥammad and a brother of Umar ibn al-Khattab, the second Islamic caliph.
Banū Taym was a clan of the Quraysh tribe of Mecca. The first caliph, Abu Bakr, hailed from the Banu Taym, as did another prominent companion of Muhammad, Talha ibn Ubaydallah.
The Ridda Wars were a series of military campaigns launched by the first caliph Abu Bakr against rebellious Arabian tribes, some of which were led by rival prophet claimants. They began shortly after the death of the Islamic prophet Muhammad in 632 and concluded the next year, with all battles won by the Rashidun Caliphate.
The ten to whom Paradise was promised were ten early Muslims to whom, according to Sunni Islamic tradition, the Islamic prophet Muhammad had promised Paradise.
Ammar ibn Yasir was a companion of Muhammad and a commander in the early Muslim conquests. His parents, Sumayya and Yasir ibn Amir, were the first martyrs of the Ummah. Ammar converted to Islam by the invitation of Abu Bakr and was amongst the muhajirun. After the migration to Medina, he participated in building the Prophet's Mosque and fought in most of the early Muslim expeditions.
From 613 to 619 CE, the Islamic prophet Muhammad gathered in his hometown of Mecca a small following of those who embraced his message of Islam and thus became Muslims. The first person who professed Islam was his wife, Khadija bint Khuwaylid. The identity of the second male Muslim, after Muhammad himself, is nevertheless disputed largely along sectarian lines, as Shia and some Sunni sources identify him as the first Shia imam Ali ibn Abi Talib, a child at the time, who grew up in the household of his cousin, Muhammad. Other sources report that the first male convert was Abu Bakr, who later succeeded Muhammad as the first Sunni caliph, or Muhammad's foster son, Zayd ibn Haritha. While it is difficult to establish the chronological order of early conversions, the identities of early Muslims are known with some certainty.
The Muhajirun were the converts to Islam and the Islamic prophet Muhammad's advisors and relatives, who emigrated from Mecca to Medina, the event is known in Islam as the Hijra. The early Muslims from Medina are called the Ansar ("helpers").
Al-Ala al-Hadrami was an early Muslim commander and the tax collector of Bahrayn under the Islamic prophet Muhammad in c. 631–632 and Bahrayn's governor in 632–636 and 637–638 under caliphs Abu Bakr and Umar. Under Abu Bakr, al-Ala suppressed a rebellion by a scion of the pro-Sasanian Lakhmid dynasty as part of the Ridda wars. Under Umar, he launched naval expeditions against the Sasanians, the last of which ended in disaster for the Arabs and was the cause of his dismissal. He was last appointed governor of Basra but died on his way there to assume office.
Tulayha ibn Khuwaylid ibn Nawfal al-Asadi was a wealthy Arab clan chief and military commander during the time of Muhammad; he belonged to the Banu Asad ibn Khuzaymah tribe.
The Expedition of Usama bin Zayd was a military expedition of the early Muslim Caliphate led by Usama ibn Zayd that took place in June 632, in which Muslim forces raided Byzantine Syria. The expedition came three years after the Battle of Mu'tah.
The Battle of Dhu al-Qassah took place in the area of Dhu al-Qassah, located approximately 36 kilometres (22 mi) east of Medina, in the Medina Province, in the central-western part of Saudi Arabia, from July 25 to July 30, 632. It pitted the forces of the Rashidun Caliphate led by Caliph Abu Bakr As-Siddiq against the rebel apostates led by General Hibal ibn Khuwailid,.
The haras was a personal bodyguard unit of the caliphs during the Umayyads and the Abbasids. The haras was also instituted in the Emirate of Córdoba in contemporary Spain.
