1)
What is the meaning of "Shiftu Dal"?
1.
Radak: Judge their case against their oppressors.
2.
Malbim: Do not tilt the verdict between two litigants.
2)
When does "Hatzdiku" apply?
1.
Rashi: If the poor is Zakai, do not change his law to liable, in order to favor the Rasha.
2.
Radak: If the poor is Zakai, rule like this! Do not fear their oppressors or favor them.