"Pg.60: The peace was ratified by a matrimonial alliance between the rival parties. This has been generally taken to mean that Chandragupta married a daughter of Seleucus, but this is not warranted by known facts. Henceforth Scleucus maintained friendly relations with the Mauryan Court and sent Megasthanes as his ambassador who lived in Pataliputra for a long time and wrote a book on India."
Munishi, K.M. (1953). The Age Of Imperial Unity Volume II, p. 60.