Until Khosrau I teamed up with the Gokturks to kick these peoples' ass at the 557 Battle of Bukhara, they extracted huge amounts of tribute from the Sassanid Empire.
The pilgrim Sung Yun, who encountered one of these people's kings in the Wakhan corridor, described them as fire-worshippers. These non-Persian people requested that catholicos Mar Aba I appoint a priest as bishop for their empire. According to the Rajatanagini chronicle, their devout Shaivite king destroyed 1,400 temples in Gandhara. Women wore one horn on their headdress for each husband they had in this people's polyandrous society. The accounts of Cosmas Indicopleustes give the name (*) "Gollas" to a powerful ruler of these people named Mihirakula. Until Khosrau I teamed up with the Gokturks to kick these peoples' ass at the 557 Battle of Bukhara, they extracted huge amounts of tribute from the Sassanid Empire. For 10 points, identify these nomadic peoples who overran much of the Gupta empire whose common name is similar to a Europe-ravaging group led by Attila.
The pilgrim Sung Yun, who encountered one of these people's kings in the Wakhan corridor, described them as fire-worshippers.
White Huns [or Sveta Hunas; or Hephthalites; do NOT accept or prompt on "Huns" alone] 