purification in islam

Divisions of Purification in islamhttp://www.fiqhenglish.com/elm/Purification.aspx
1-Inner Purification
It is the purification of the heart from polytheism, sins
etc. It is not possible to attain purification when the filth of
polytheism lingers on in the heart. As pointed out by Allah
:�O you who believe, verily, the mushrikun (polytheists,
pagans, idolaters, disbelievers in oneness of Allah and in the
message of Muhammad) are najas (filthy/impure). So let them
not come near the Al-Masjid Al-Haram (the holy masjid in
Makkah) after this year; and if you fear poverty, Allah  will
enrich you if He wills out of His bounty. Surely, Allah is Allknowing,
All-wise�. ( Tawbah:28)
And the Prophet صلى الله عليه وسلم said: � Indeed the believer does
not become impure