What is the ruling regarding the *mahr* (dower) if a marriage contract is judged void before consummation?

Primary text

In every instance where the marriage contract is judged void and the separation occurs before consummation, the wife is entitled to no *mahr*. If the separation occurs after consummation, she is entitled to the dower of the like (*mahr al-mithl*) or the stipulated dower (*al-musamma*), depending upon the existing scholarly disagreement previously mentioned.