Dear Gladiator, this another Surah from The Koran:
2:222 They question thee (O Muhammad) concerning menstruation. Say: It is an illness, so let women alone at such times and go not in unto them till they are cleansed. And when they have purified themselves, then go in unto them as Allah hath enjoined upon you. Truly Allah loveth those who turn unto Him, and loveth those who have a care for cleanness.
The Allah (or is it Mohammed) equates menstruation to an illness where as it is a normal biological process and a pre-condition for reproduction. Is this what you call devine revealation??????????????????