Ibrahim Awwad Ibrahim Ali al-Badri (ابراهيم عواد ابراهيم علي البدري), more commonly known as Abu Dua, and also known as Ibrahim Awwad Ibrahim Ali al-Badri al-Samarrai, Dr. Ibrahim, and Abu Bakr al-Baghdadi, is the leader of al-Qaeda in Iraq (AQI), which is the Iraqi division of the international Salafi jihadi militant organization al-Qaeda.

On 4 October 2011, the US State Department marked Dua as a Specially Designated Global Terrorist while announcing a $10 million reward for information leading to his capture or death. Only Ayman al-Zawahiri, chief of the global al-Qaeda organization, merits a larger reward at $25 million.

Abu Dua is in charge of running all AQI activity in Iraq, and is responsible for managing and directing large-scale operations such as the 28 August 2011 attack on the Umm al-Qura mosque in Baghdad that killed prominent Sunni lawmaker Khalid al-Fahdawi.

Following the 2 May 2011 US commando raid that killed al-Qaeda supreme leader Osama bin Laden in Abbottabad, Pakistan, Dua released a statement eulogizing bin Laden and threatened violent retaliation for his death. On 5 May 2011, he claimed responsibility for an attack in Hilla that killed 24 policemen and wounded 72 others. Between March and April 2011, AQI claimed 23 other attacks south of Baghdad, all of which are alleged to have been carried out under Dua's command.

Abu Darda was one of the companions of the Islamic prophet Muhammad.

Abu Darda was a trader in Medina and belonged to the al-Ḥārith clan of the Banu Khazraj tribe. He converted to Islam after the Battle of Badr. He was declared the brother of Salman the Persian and served as a judge in Syria during the caliph Uthman's reign.

He died in 652 AD (AH 32) in Damascus, where the tombstones of his and his wife Umm al-Dardāʾ may still be seen.

An hadith transmitted by him states that Muhammad enjoined to him three things: to fast three days every month, to offer the Witr salat before sleep, and to offer two rakat sunnah of Fajr. From Tabarani and Majma uz-Zuwaid

Abu Darda's own preaching focused on the insignificance of worldly wealth and the minor details of life. According to him, this life was comparable to a loan.

It is said of Abu Darda that once a friend went to visit him at his home. On reaching there, the friend noticed, with grave concern, the appalling condition of Abu Darda's house. According to the friend, Abu Darda's house was shorter than the full height of a standing man. It was also as narrow as it was short, and the household utilities were less than basic. When the friend inquired from Abu Darda why he lived in such dire conditions, Darda's response was: "Do not worry my friend, this is just my temporary shade. I am building a proper house somewhere, slowly putting good things deserving thereof." When, on another occasion, the friend went back and found the same deprived shade, he demanded to know why Abu Darda had not moved to his better house. It was then that Abu Darda revealed to him that the house he referred to was the Kabr (the grave).

Abu Bakr (Abdullah ibn Abi Quhafa) (Arabic: عبد الله بن أبي قحافة, Transliteration: ʿAbd Allāh ibn Abī Quḥāfah, c. 573 CE - 634 CE) also known as Abū Bakr as-Șiddīq (Arabic: أبو بكر الصديق) was a senior companion (Sahabi) and the father-in-law of the Islamic prophet Muhammad. He ruled over the Rashidun Caliphate from 632–634 CE when he became the first Muslim Caliph following Muhammad's death. As Caliph, Abu Bakr succeeded to the political and administrative functions previously exercised by Muhammad, since the religious function and authority of prophethood ended with Muhammad's death according to Islam. He was called Al-Siddiq (The Truthful) and was known by that title among later generations of Muslims.

As a young man, Abu Bakr became a cloth merchant and he traveled extensively in Arabia and neighboring lands in the Middle East, through which he gained both wealth and experience. He eventually came to be recognized as the chief of his clan. On his return from a business trip to Yemen, he was informed that in his absence Muhammad had openly declared his prophethood. Not long after, Abu Bakr accepted Islam and was the first person outside the family of Muhammad to openly become a Muslim. He was instrumental in the conversion of many people to the Islamic faith and early in 623, Abu Bakr's daughter Aisha was married to Muhammad, strengthening the ties between the two men.