One should never do that to another which he considers as injurious to his own self. This in brief, is the rule of virtue. One by acting in a different way by giving way to desire, becomes guilty of sin.
न तत् परस्य संदध्यात् प्रतिकूलं यदात्मनः। एष संक्षेपतो धर्मः कामादन्यः प्रवर्तते॥