यः whoever, पूर्वकार्याणि: that which has to be performed earlier, कर्माणि: acts, पश्चात् afterwards, अपरकार्याणि: that which has to be done later, पूर्वंच: does earlier, चिकीर्षतिसः seeks to perform, नयानयौ: right and wrong, नवेद: does not know.

"He who seeks to perform earlier what has to be done later and does later what have to be done earlier is not a knower of right and wrong."