Ṭahārah
طهارة
نجاسة
Najāsah
Definition
Ritual impurity attached to substances like urine, blood, or pig — must be removed from body, clothing and prayer spot before ṣalāh.
Example
A droplet of urine on clothing is washed until the colour, smell and taste are gone; the place of ṣalāh is simply washed once.