what is the definition of Ahl ul Bayt

[Iconoclast]

@righteous

only the wives which have prophets (AS) in their progeny. like Bibi Sarah and Bibi Marium. Wife is not a permanent relationship please look at the Hz Nuh (AS) and Hz Lut (AS) stories in Quran.

Hence as proven through Quran and Ahadith only Ali, Fatima, Hassan and Hussain are considered as Ahlul Bayt.

That is an assumption, there is no proof that only those with Prophets in their offsprings are Ahl-e-Bait.