For after routing a thousand of the enemy's horsemen and sixty of their chariots which engaged him, he captured all the chariots, and slew four hundred of the horsemen. And now Porus, thus led to believe that Alexander himself had crossed the river, advanced upon him with all his forces, except the part he left behind to impede the crossing of the remaining Macedonians.
Edition :
Plutarch. Plutarch's Lives. with an English Translation by. Bernadotte Perrin. Cambridge, MA. Harvard University Press. London. William Heinemann Ltd. 1919. 7.