In the murals of Afrasiab, an inscription mentioning Varhuman has been found. 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. I arrived here from Turantash, the lord of Chaganian, to Samarkand, to the king, and with respect [to] the king [now] I am [here]. And with regard to me do not have any misgivings: About the gods of Samarkand, as well as about the writing of Samarkand I am keenly aware, and I also have not done any harm to the king. Let you be quite fortunate!" And King Varkhuman Unash took leave [of him]. And [then] the dapirpat (chancellor) of Chach opened his mouth.
— Inscription on an ambassador's robe.
Whitfield, Susan (2004). The Silk Road: Trade, Travel, War and Faith. British Library. Serindia Publications, Inc. p. 112. ISBN 978-1-932476-13-2. 978-1-932476-13-2
Azarpay, Guitty; Belenickij, Aleksandr M.; Maršak, Boris Il'ič; Dresden, Mark J. (January 1981). Sogdian Painting: The Pictorial Epic in Oriental Art. University of California Press. p. 17. ISBN 978-0-520-03765-6. 978-0-520-03765-6
Baumer, Christoph (18 April 2018). History of Central Asia, The: 4-volume set. Bloomsbury Publishing. p. 243. ISBN 978-1-83860-868-2. 978-1-83860-868-2
Whitfield, Susan (2004). The Silk Road: Trade, Travel, War and Faith. British Library. Serindia Publications, Inc. p. 110. ISBN 978-1-932476-13-2. 978-1-932476-13-2
Whitfield, Susan (2004). The Silk Road: Trade, Travel, War and Faith. British Library. Serindia Publications, Inc. p. 110. ISBN 978-1-932476-13-2. 978-1-932476-13-2
Whitfield, Susan (2004). The Silk Road: Trade, Travel, War and Faith. British Library. Serindia Publications, Inc. p. 110. ISBN 978-1-932476-13-2. 978-1-932476-13-2
Whitfield, Susan (2004). The Silk Road: Trade, Travel, War and Faith. British Library. Serindia Publications, Inc. p. 110. ISBN 978-1-932476-13-2. 978-1-932476-13-2
Whitfield, Susan (2004). The Silk Road: Trade, Travel, War and Faith. British Library. Serindia Publications, Inc. p. 112. ISBN 978-1-932476-13-2. 978-1-932476-13-2
Baumer, Christoph (18 April 2018). History of Central Asia, The: 4-volume set. Bloomsbury Publishing. p. 243. ISBN 978-1-83860-868-2. 978-1-83860-868-2
Mode, Markus (2006). "Reading the Afrasiab Murals: Some Comments on Reconstructions and Details" (PDF). Rivista degli studi orientali. 78: 108. ISSN 0392-4866. JSTOR 41913392. https://www.jstor.org/stable/pdf/41913392.pdf
New Book of Tang, Book 221. 新唐书/卷221下: "高宗永徽时,以其地为康居都督府,即授其王拂呼缦为都督。" in "新唐书/卷221下 - 维基文库,自由的图书馆". zh.wikisource.org (in Simplified Chinese). https://zh.m.wikisource.org/zh-hans/%E6%96%B0%E5%94%90%E6%9B%B8/%E5%8D%B7221%E4%B8%8B
Baumer, Christoph (18 April 2018). History of Central Asia, The: 4-volume set. Bloomsbury Publishing. p. 243. ISBN 978-1-83860-868-2. 978-1-83860-868-2
"Afrosiab Wall Painting". contents.nahf.or.kr. NORTHEAST ASIAN HISTORY FOUNDATION. http://contents.nahf.or.kr/goguryeo/afrosiab/english.html
Bulatova, Vera; Shishkina, Galina V. (1986). Самарканд: музей под открытым небом "Samarkand, Open-air Museum" (in Uzbek). Publishing house of literature and art Изд-во лит-ры и искусства им. Гафура Гуляма. p. 47. ..."When king Varkhuman of the Unash dynasty approached the ambassador, the ambassador opened his mouth and said : 'I am Pukarzate..." /wiki/Vera_Bulatova
de la Vaissière, Étienne (2006). "LES TURCS, ROIS DU MONDE À SAMARCANDE" (PDF). Rivista degli studi orientali. 78: 159–160. ISSN 0392-4866. JSTOR 41913394. https://www.jstor.org/stable/pdf/41913394.pdf
Hansen, Valerie (2015). The Silk Road: A New History. Oxford University Press. p. 127. ISBN 978-0-19-021842-3. 978-0-19-021842-3