When Harsha’s father, the king of Sthānvīshvara, passed away, the people ‘bore him to the river Sarasvatī, and there upon a pyre befitting an emperor solemnly consumed all but his glory in the flames’. In a classic ritual, Harsha ‘passed on to the Sarasvatī’s banks, and having bathed in the river, offered water to his father’.
Source, in full
Bāna, Harsa-Carita, tr. E.B. Cowell, F.W. Thomas, London, 1929, pp. 158 & 160, quoted by Darian, Steven, ‘Gangā and Sarasvatī: An Incidence of Mythological Projection’, East and West, vol. 26, nos 1-2, 1976, p. 155. as quoted from Danino, M. (2010). The lost river : on the trail of the Sarasvatī. Penguin Books India.