Sindhu Kingdom is mentioned in Indian epics like the Mahabharata and Harivamsa Purana, often alongside the Sauvira kingdom, to be located on the banks of river Sindhu (Indus). It is believed that Sindhu kingdom was founded by Vrishadarbha, one of sons of Sivi. Its inhabitants of the kingdoms were called Sindhus or Saindhavas. According to the epic Mahabharata, Jayadratha (the husband of Duryodhana's sister) was the king of Sindhus, Sauviras and Sivis. Probably Sauvira and Sivi were two kingdoms close to the Sindhu kingdom and Jayadratha conquered them, holding them for some period of time. Sindhu and Sauvira seem to have been two warring states fighting each other.