Other references are the Shung-Shu History of the Liu Song dynasty, where the kingdom is named Kapili (now the name of a river); the Gachtal stone pillar inscription written in Kamrupi Prakrit.[7][8] N. K. Bhattasali has identified it with Dabaka in modern Hojai district, with the kingdom associated with the Kopili-Kolong river valley.[9][10]
Historians such as B. N. Puri (1968) and P. C. Choudhury (1959) claim that it was absorbed much earlier in the first half of the 5th century during the reign of Kalyana Varman (422–446).[11][12]
Its capital was located near Kopili river. In the year 428 AD, an ambassador was sent to China by Davaka king, whose name according to Chinese sources is Yuegnai or Yu Chai.[13]
Gatchal Stone Pillar inscription mention that the Yavana(Muslim) crossed the boundary to move east to reach Davaka in 1362 (saka 1284). A river (identified as Yamuna) that floods during April-May helped naval forces to drive away enemies.[14]
^Suresh Kant Sharma, Usha Sharma (2005), Discovery of North-East India: Geography, History, Culture, ..., Davaka (Nowgong) and Kamarupa as separate and submissive friendly kingdoms
^"Population by Religious Communities". Census India – 2001. Ministry of Home Affairs, Government of India. Retrieved 1 July 2019. Census Data Finder/C Series/Population by Religious Communities
^ identified with the Davaka region of Nagaon district of Assam, the location of which, can be confirmed by the Gachtal stone pillar inscription.6 The Allahabad stone pillar inscription of Samudragupta mentions Davaka along with Samatata (Boruah 2001:136)
^Kamrupi inscriptions associated with the Kamarupa kingdom give an estimate of its geographical location and extent.(Lahiri 1991:26–28)
^"As regards the eastern limits of the kingdom, Davaka was absorbed within Kamarupa under Kalyanavarman and the outlying regions were brought under subjugation by Mahendravarman." (Choudhury 1959, p. 47)
^"It is presumed that (Kalyana Varman) conquered Davaka, incorporating it within the kingdom of Kamarupa" (Puri 1968, p. 11)
^Besides these, the Chinese source clearly mentioned that the mission was sent by a king called Yueh-ai of the Kapili state whose capital city lies close to the Heng-ho or Ka- pi-li-ho river.(Boruah 2001:138)
Choudhury, P. C. (1959). The History of Civilization of the People of Assam to the Twelfth Century AD. Department of History and Antiquarian Studies, Gauhati, Assam.
Lahiri, Nayanjot (1991). Pre-Ahom Assam: Studies in the Inscriptions of Assam between the Fifth and the Thirteenth Centuries AD. Delhi: Munshiram Manoharlal Publishers Pvt Ltd.
Puri, Brij Nath (1968). Studies in Early History and Administration in Assam. Gauhati University.
Mookerji, Radhakumud (1973). The Gupta Empire. Motilal Banarasidass.
Sharma, M M (1990), "Language and Literature", in Barpujari, H K (ed.), The Comprehensive History of Assam, vol. I, Guwahati: Publication Board, Assam, pp. 263–264
) in the Allahabad Pillar inscription
