Shaykh Fawzaan mentions that najaasah (filth) is categorized in two categories:
- An Najaasatul Hisiyah (The filth which is perceivable or you can actually see or touch; eg. urine)
- An Najaasah Al Ma’nawiyah (The najaasah you cannot touch or feel, it is in your heart)
He then mentions an example from the Qur’an:
“Oh you who believe the mushrikoon (idolators) are unclean” Surah Tawbah, (9:28)
He later mentions that An Najaasatul Hisiyah (urine etc.) can be purified with water, snow and hail.
However, An Najaasatul Ma’nawiyah (filth of the heart) cannot be purified except by sincerity and Tawbah.