If we only know Imam Hussein (A.S) we have already known all the divine Prophets and the Infallible Imams, because the center of the circle of knowledge is Imam Hussein (AS). Imam is the full View Qible toward the right path.
The one who steps and walks in the path of the Master of the Martyrs (A.S), he will in fact take a shortcut in the path of servitude, because the path of Imam Hussein (AS) is the path of blessing, intercession, salvation and servitude of Almighty Allah.
In the following verse, undoubtedly, people of the house (Ahlulbayt) are those that God wants to remove all kinds of uncleanliness from them and purify them.
«إِنَّما یرِیدُ اَللّهُ لِیذْهِبَ عَنْکمُ اَلرِّجْسَ أَهْلَ اَلْبَیتِ وَ یطَهِّرَکمْ تَطْهِیراً»
"People of the house, God wants to remove all kinds of uncleanliness from you and to purify you thoroughly" AL-AHZAB (THE CLANS)
source : erfan.ir