The World Federation One Stop Fiqh

Ruling 396

A woman who has medium istiḥāḍah and must perform wuḍūʾ as well as ghusl, must, based on obligatory precaution, first perform ghusl and then perform wuḍūʾ. However, if a woman who has excessive istiḥāḍah wants to perform wuḍūʾ, she must perform it before she performs ghusl.