His Maternal Uncles
Hazrat Alaa (ra) was originally from Hazr Maut and was the confederate of Harr bin Umayyah. The Holy Prophet (sa) had appointed Hazrat Alaa (ra) as the governor of Bahrain and he served as the governor until his demise. Hazrat Alaa (ra) passed away in the fourteenth year after Hijra during the Khilafat of Hazrat Umar (ra).
One of his brothers, Aamir bin Hazrami, who had not accepted Islam, was killed during the Battle of Badr. Another brother of his, Amr bin Hazrami was the first idolater to be killed by a Muslim. Furthermore, his possessions were the first to be acquired by the Muslims as part of the spoils of war.
(al-Tabaqaat-ul-Kubra li ibn Sa‘d, Vol. 3, p. 160, Dar-ul-Kutub al-Ilmiyyah, Beirut, 1990) (Usdul Ghabah, Vol. 4, p. 71, al-Alaa bin al-Hazrami (ra), Dar-ul-Kutub al-Ilmiyyah, Beirut, 2008)