Under his reign, he successfully incorporated Pan Pan, a kingdom located in the north of the Malay Peninsula, into the Srivijayan sphere of influence before 775 CE.
At an old monastery of Nakhon Si Thammarat in modern-day Thailand, there is a stele indicating that Dharmasetu ordered the construction of three sanctuaries dedicated to Bodhisattvas Padmapani, Vajrapani, and Buddha in Ligor.
[1]: 130–131 The inscription further states that Dharmasetu was the head of the Sailendra dynasty that ruled Java.
This is the first instance of a relationship known to have existed between Srivijaya and the Sailendra.
[1]: 221–223 Dewi Tara, the daughter of Dharmasetu, later married a member of the Sailendra dynasty by the name of Samaratunga who later assumed the throne of Srivijaya around 792.