dear Pinks,
clinically/ medically, the same blood, can give rise to a human baby. & who bears the pain for it all - women. as for spouse intimacy relationship, that is a separate issue.
cleanliness is about intent in attention which one is ready to give to recitation of Quran-e-Pak.
does this make sense?
ji Baji, their arguement was that we are given clear order to abstain from praying and fasting during certain days of the month, but none with regards to simply reciting the Quran. This was with regards to a women's monthly cycle and post child birth. As for husband/wife relations, then they are not allowed to even recite what they remember untill they cleanse themselves.