Ghusl,
the complete ablution:
Ghusl means to wash the entire body with water. Says Allah
in the Qur'an, "If you are sexually impure, purify yourselves."
And, "They question you concerning menstruation. Say: It is
an illness, so let women alone at such times and do not have
sex with them until they are cleansed" (al-Baqarah 222).