What does Portia go on to tell Shylock about the laws of Venice, as applicable for aforeigner?

In "The Merchant of Venice" by William Shakespeare, Portia, disguised as a lawyer, informs Shylock about the laws of Venice pertaining to foreigners.

1. Portia first allows Shylock to believe that he will be allowed to exact his pound of flesh from Antonio, as per the bond they had agreed upon.

2. However, she then points out a law that Shylock was not aware of. According to the Venetian law, if a foreigner (like Shylock, who is a Jew) directly or indirectly attempts to kill a Venetian citizen (like Antonio), the citizen has the right to claim one half of the foreigner's property.

3. Furthermore, the life of the foreigner lies at the mercy of the Duke. The Duke can choose to spare the foreigner's life or not.

4. In this case, Antonio can claim half of Shylock's property, and Shylock's life is in the hands of the Duke.

5. Portia uses this law to save Antonio's life and ruin Shylock. She cleverly interprets the law to mean that Shylock can take his pound of flesh, but not a single drop of Antonio's blood, as the bond does not mention blood.

6. If Shylock does shed any of Antonio's blood, he will be guilty of conspiring against the life of a Venetian citizen, and will be subject to the law that Portia has just explained.

7. Thus, Shylock is trapped. If he cuts Antonio, he risks his own life. If he doesn't, he loses his bond. Either way, he is ruined.

This is how Portia uses her knowledge of the law to outwit Shylock and save Antonio's life.