[4][5] Modern scholars suggest Ayodhyapura was potentially Si Thep, the early center of the Dvaravati civilization, which flourished from the 6th to 11th century.

[6] Ayodhyapura potentially began to decline in the mid-10th century as the Khmer inscription dating to 946 mentioned the Angkorian king Rajendravarman II won over Rāmaññadesa (country of the Mon) and Champa.

[8]: 3546  Earlier, the Ratanabimbavamsa [th] mentions a battle between Ayodhyapura led by Adītaraj and Yaśodharapura over the Emerald Buddha in the late 9th or early 10th centuries.

[2]: 51  However, the conflict between these two polities may exist long before, as Woodward stated Jayavarman II, who established Kambujadesa and relocated the capital northward to Yaśodharapura in the mid 9th century,[9]: 87  formed an ally with the city-states in the Mun-Chi river basin, including Wen Dan, to counter Si Thep's strength in the Pa Sak River basin in the west.

[13] The text given in the Ratanabimbavamsa [th], which is a mix of fact and fables with some variations to the story, states the Emerald Buddha which was brought from Pataliputra (today's Patna, India) to Inthapatnakhon (อินทปัตย์นคร, Yaśodharapura) in present-Cambodia through Lankadvipa (Sri Lanka).