Al-Abna'

(الأبناء, lit. 'the sons') was a term that was used in South Arabia to refer to a community of people who were descended from intermarriages between Persian soldiers and local Arab women, particularly in the context of the Aksumite–Persian wars in the 6th century. The Persian army had been garrisoned in Sanaa and throughout Yemen after the region was re-conquered by the Persia-based Sasanian Empire in the 570s, indefinitely ending the rule of the Ethiopia-based Aksumite Empire in the Arabian Peninsula. Following the rise of Muhammad in the 7th century, most of the community adopted Islam and subsequently played an active role in the early Muslim conquests.

Etymology
According to a commentary by the 10th-century Arab historian Abu al-Faraj al-Isfahani in the Kitab al-Aghani, these people were, up until this time, referred to as (بنو الأحرار, lit. 'sons of the free people') in Sanaa and as  in the rest of Yemen. The names were defined as such due to a narration that told of a strong storm that hit ancient Yemen and revealed a stone inscription that stated: "Who rules Dhamar? Himyar the Good. Who rules Dhamar? The evil Abyssinians. Who rules Dhamar? The free Persians." A similar stone inscription of pre-Islamic Arabia was said to have been found underneath the Kaaba in Mecca.

History
The known history of the people covers their time between the Aksumite–Persian wars in the 6th century and the rise of Islam in the 7th century. It is unknown whether the community practiced the Zoroastrianism of their Persian forefathers, or if they had been influenced by South Arabian paganism and local Christianity. The 9th/10th-century Iranian scholar al-Tabari stated that Khurrah Khosrow, the fourth Sasanian governor of Yemen, was replaced by Badhan during the reign of Khosrow II due to the former's excessive assimilation into Arab society.

The authority of Yemen's Sasanian governors was reduced during the Byzantine–Sasanian War of 602–628; this conflict had coincided with the emergence of Muhammad as a religious prophet in the Arabian Peninsula. The Sasanian leaders in Yemen, including Badhan, Fayruz al-Daylami, and Wahb ibn Munabbih, responded favourably to Muhammad's diplomatic missions and had formally converted to Islam by 631. Following Badhan's death, his son Shahr replaced him as governor, but was killed by the rebellious Arab tribal leader al-Aswad al-Ansi, who had claimed prophethood during the Ridda Wars. Al-Aswad was later killed by Fayruz, who assumed his position as Yemen's governor. After that, another rebellion by Ghayth ibn Abd Yaghuth sought to expel the community from Arabia as a whole. Dādawayh (دادويه), a leader of the community, was killed during this rebellion, while Fayruz and Jushnas (Gushnasp) managed to flee with their allies and later defeated Ghayth. Fayruz and the people were later active in the Fertile Crescent and Yemen under Umar ibn al-Khattab of the Rashidun Caliphate.

retained their distinct identity during the Islamic period; their nisba was (الأبناوي). These people were gradually absorbed into the local population and thus disappeared from legal records. Descendants of  live in the village of al-Furs in Wadi Rijam; in Wadi al-Sir of Bani Hushaysh District; and in Khulan al-Tyal, Bayt Baws, and Bani Bahlul.

The title may have been the root of the title, used to refer to the influential Persians of Baghdad during the time of the Abbasid Caliphate. The "Abna" recorded in some conflicts among the Arabs of Khorasan during the time of the Umayyad Caliphate is not related to Yemen's community.