Wars of the Diadochi
Seleucus Nicator ceded the Hindu Kush, Punjab, Afghanistan and parts of Iran and central asia to Chandragupta Maurya. In consequence of their arrangement, Seleucus received 500 war elephants from Chandragupta Maurya, which subsequently influenced the Wars of the Diadochi in the west. Seleucus and Chandragupta also agreed to a marriage alliance, probably the marriage of Seleucus' daughter to Chandragupta. According to Strabo, the ceded territories bordered the Indus: