It was likely through the patronage of the Kindites in the caliphs' courts in Syria that Raja gained favor with the Umayyads, particularly Marwan's son and successor, Abd al-Malik (). The latter entrusted Raja and his own Jerusalemite mawlā, Yazid ibn Sallam, with overseeing the financing of the Dome of the Rock's construction in Jerusalem.
It was probably through the patronage of the Kindites in the caliphs' courts in Syria that Raja earned favor among the Umayyads, especially Marwan's son and successor, Abd al-Malik (). The latter assigned Raja and his Jerusalemite mawlā, Yazid ibn Sallam, to oversee the funding for the Dome of the Rock's construction in Jerusalem.