[4] He is known from the Afrasiab murals of Afrasiyab in Samarkand, where he is seen being visited by embassies from numerous countries, including China.

[5] One of the murals show a Chinese Embassy carrying silk and a string of silkworm cocoons to the local Sogdian ruler.

[5] The scene depicted in the Afrasiyab murals probably occurred soon after 658 CE, when the Tang dynasty had conquered the Western Turkic Khaganate.

[4] He is mentioned in the Chinese annals: During the Yonghui (永徽) era (650-655 CE), emperor Gaozong made this territory the Government of Kangju, and gave the title of Governor to the King of the country, Varkhuman (拂呼缦, Fúhūmàn).Varkhuman's legacy was short-lived, as his palace was destroyed by the Arab general Sa'id ibn Uthman between 675 and 677 CE.

It is written in Sogdian: When King Varkhuman Unash came to him [the ambassador] opened his mouth [and said thus]: "I am Pukarzate, the dapirpat (chancellor) of Chaganian.