Ramadan: Ahlul-Bayt, Hadiths from Sunni sources?

I think it is the most strange philosophy of the world that A man,s wife(wives) are not his house hold..I did,nt hear or read anywhere that any culture or religion ever denied or at least debated on this theory which is totally against the law of nature ..I would like to ask those people who propagate this strange theory of house hold, can they exclude their wives from their own ahl-e-bait?..Quran is the supreme authority on Islamic believes and it clearely mention the world "Binat"(Arabic plural for daughters) for prophets daughters in the same suara(al-ahzab).But some biased and blind people who ert that prophet had only one daughter ,how can they respect his wives(peace be upon all of them).whome allah declared the mothers of believers.