Things that are regarded clean in terms of Religion * All of the
earth (mines, waters, grass, trees, flowers, fruit, etc) the
external parts of the bodies of all of the living beings are
regarded clean unless something regarded as najasah ghalizah or
khafifah smears on them. Only the pig is an exception. Its
flesh, external part of its body, that is, its hair and skin are
all dirty. If the clothes or the hand touches it, the part that
touches it becomes dirty. It becomes obligatory to wash that
part. Some scholars say it is permissible to use the hair of pig
in making paintbrushes and in sewing shoes due to a necessity.
That is, the paint applied by a paintbrush made of the hair of
pig and the shoes sewn by thread made of the hair of pig are not
regarded as dirty. Shafiis regard the external part of the body
of the dog as dirty just like the pig. * The blood of the flea,
lice and bedbug is clean too. * The fish and other animals that
live in water and die in water are clean. Their blood is clean,
too. If it s