sancintya -- having thought; ari -- their enemy; vadha -- for killing; upayam -- about the means; bhimasya -- to Bhima; amogha-darsanah -- the Supreme Lord, whose vision is infallible; darsayam asa -- showed; vitapam -- a tree branch; patayan -- tearing apart; iva -- as if; samjnaya -- as a sign.

Having determined how to kill the enemy, that Lord of infallible vision made a sign to Bhima by tearing in half a small branch of a tree.